tests: introduce a framework for testing migration performance

This introduces a moderately general purpose framework for
testing performance of migration.

The initial guest workload is provided by the included 'stress'
program, which is configured to spawn one thread per guest CPU
and run a maximally memory intensive workload. It will loop
over GB of memory, xor'ing each byte with data from a 4k array
of random bytes. This ensures heavy read and write load across
all of guest memory to stress the migration performance. While
running the 'stress' program will record how long it takes to
xor each GB of memory and print this data for later reporting.

The test engine will spawn a pair of QEMU processes, either on
the same host, or with the target on a remote host via ssh,
using the host kernel and a custom initrd built with 'stress'
as the /init binary. Kernel command line args are set to ensure
a fast kernel boot time (< 1 second) between launching QEMU and
the stress program starting execution.

None the less, the test engine will initially wait N seconds for
the guest workload to stablize, before starting the migration
operation. When migration is running, the engine will use pause,
post-copy, autoconverge, xbzrle compression and multithread
compression features, as well as downtime & bandwidth tuning
to encourage completion. If migration completes, the test engine
will wait N seconds again for the guest workooad to stablize on
the target host. If migration does not complete after a preset
number of iterations, it will be aborted.

While the QEMU process is running on the source host, the test
engine will sample the host CPU usage of QEMU as a whole, and
each vCPU thread. While migration is running, it will record
all the stats reported by 'query-migration'. Finally, it will
capture the output of the stress program running in the guest.

All the data produced from a single test execution is recorded
in a structured JSON file. A separate program is then able to
create interactive charts using the "plotly" python + javascript
libraries, showing the characteristics of the migration.

The data output provides visualization of the effect on guest
vCPU workloads from the migration process, the corresponding
vCPU utilization on the host, and the overall CPU hit from
QEMU on the host. This is correlated from statistics from the
migration process, such as downtime, vCPU throttling and iteration
number.

While the tests can be run individually with arbitrary parameters,
there is also a facility for producing batch reports for a number
of pre-defined scenarios / comparisons, in order to be able to
get standardized results across different hardware configurations
(eg TCP vs RDMA, or comparing different VCPU counts / memory
sizes, etc).

To use this, first you must build the initrd image

 $ make tests/migration/initrd-stress.img

To run a a one-shot test with all default parameters

 $ ./tests/migration/guestperf.py > result.json

This has many command line args for varying its behaviour.
For example, to increase the RAM size and CPU count and
bind it to specific host NUMA nodes

 $ ./tests/migration/guestperf.py \
       --mem 4 --cpus 2 \
       --src-mem-bind 0 --src-cpu-bind 0,1 \
       --dst-mem-bind 1 --dst-cpu-bind 2,3 \
       > result.json

Using mem + cpu binding is strongly recommended on NUMA
machines, otherwise the guest performance results will
vary wildly between runs of the test due to lucky/unlucky
NUMA placement, making sensible data analysis impossible.

To make it run across separate hosts:

 $ ./tests/migration/guestperf.py \
       --dst-host somehostname > result.json

To request that post-copy is enabled, with switchover
after 5 iterations

 $ ./tests/migration/guestperf.py \
       --post-copy --post-copy-iters 5 > result.json

Once a result.json file is created, a graph of the data
can be generated, showing guest workload performance per
thread and the migration iteration points:

 $ ./tests/migration/guestperf-plot.py --output result.html \
        --migration-iters --split-guest-cpu result.json

To further include host vCPU utilization and overall QEMU
utilization

 $ ./tests/migration/guestperf-plot.py --output result.html \
        --migration-iters --split-guest-cpu \
	--qemu-cpu --vcpu-cpu result.json

NB, the 'guestperf-plot.py' command requires that you have
the plotly python library installed. eg you must do

 $ pip install --user  plotly

Viewing the result.html file requires that you have the
plotly.min.js file in the same directory as the HTML
output. This js file is installed as part of the plotly
python library, so can be found in

  $HOME/.local/lib/python2.7/site-packages/plotly/offline/plotly.min.js

The guestperf-plot.py program can accept multiple json files
to plot, enabling results from different configurations to
be compared.

Finally, to run the entire standardized set of comparisons

  $ ./tests/migration/guestperf-batch.py \
       --dst-host somehost \
       --mem 4 --cpus 2 \
       --src-mem-bind 0 --src-cpu-bind 0,1 \
       --dst-mem-bind 1 --dst-cpu-bind 2,3
       --output tcp-somehost-4gb-2cpu

will store JSON files from all scenarios in the directory
named tcp-somehost-4gb-2cpu

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <1469020993-29426-7-git-send-email-berrange@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>

16 files changed, 2328 insertions, 0 deletions

diff --git a/tests/Makefile.include b/tests/Makefile.include
index e7e50d6bd9..9286148432 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -627,6 +627,18 @@ tests/test-filter-redirector$(EXESUF): tests/test-filter-redirector.o $(qtest-ob
 tests/ivshmem-test$(EXESUF): tests/ivshmem-test.o contrib/ivshmem-server/ivshmem-server.o $(libqos-pc-obj-y)
 tests/vhost-user-bridge$(EXESUF): tests/vhost-user-bridge.o
 
+tests/migration/stress$(EXESUF): tests/migration/stress.o
+	$(call quiet-command, $(LINKPROG) -static -O3 $(PTHREAD_LIB) -o $@ $< ,"  LINK  $(TARGET_DIR)$@")
+
+INITRD_WORK_DIR=tests/migration/initrd
+
+tests/migration/initrd-stress.img: tests/migration/stress$(EXESUF)
+	mkdir -p $(INITRD_WORK_DIR)
+	cp $< $(INITRD_WORK_DIR)/init
+	(cd $(INITRD_WORK_DIR) && (find | cpio --quiet -o -H newc | gzip -9)) > $@
+	rm $(INITRD_WORK_DIR)/init
+	rmdir $(INITRD_WORK_DIR)
+
 ifeq ($(CONFIG_POSIX),y)
 LIBS += -lutil
 endif
diff --git a/tests/migration/.gitignore b/tests/migration/.gitignore
new file mode 100644
index 0000000000..84f37552e4
--- /dev/null
+++ b/tests/migration/.gitignore
@@ -0,0 +1,2 @@
+initrd-stress.img
+stress
diff --git a/tests/migration/guestperf-batch.py b/tests/migration/guestperf-batch.py
new file mode 100755
index 0000000000..cb150ce804
--- /dev/null
+++ b/tests/migration/guestperf-batch.py
@@ -0,0 +1,26 @@
+#!/usr/bin/python
+#
+# Migration test batch comparison invokation
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+
+from guestperf.shell import BatchShell
+
+shell = BatchShell()
+sys.exit(shell.run(sys.argv[1:]))
diff --git a/tests/migration/guestperf-plot.py b/tests/migration/guestperf-plot.py
new file mode 100755
index 0000000000..d70bb7a557
--- /dev/null
+++ b/tests/migration/guestperf-plot.py
@@ -0,0 +1,26 @@
+#!/usr/bin/python
+#
+# Migration test graph plotting command
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+
+from guestperf.shell import PlotShell
+
+shell = PlotShell()
+sys.exit(shell.run(sys.argv[1:]))
diff --git a/tests/migration/guestperf.py b/tests/migration/guestperf.py
new file mode 100755
index 0000000000..99b027e8ba
--- /dev/null
+++ b/tests/migration/guestperf.py
@@ -0,0 +1,27 @@
+#!/usr/bin/python
+#
+# Migration test direct invokation command
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+import sys
+
+from guestperf.shell import Shell
+
+shell = Shell()
+sys.exit(shell.run(sys.argv[1:]))
diff --git a/tests/migration/guestperf/__init__.py b/tests/migration/guestperf/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/tests/migration/guestperf/__init__.py
diff --git a/tests/migration/guestperf/comparison.py b/tests/migration/guestperf/comparison.py
new file mode 100644
index 0000000000..d0b7df97c8
--- /dev/null
+++ b/tests/migration/guestperf/comparison.py
@@ -0,0 +1,124 @@
+#
+# Migration test scenario comparison mapping
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+from guestperf.scenario import Scenario
+
+class Comparison(object):
+    def __init__(self, name, scenarios):
+        self._name = name
+        self._scenarios = scenarios
+
+COMPARISONS = [
+    # Looking at effect of pausing guest during migration
+    # at various stages of iteration over RAM
+    Comparison("pause-iters", scenarios = [
+        Scenario("pause-iters-0",
+                 pause=True, pause_iters=0),
+        Scenario("pause-iters-1",
+                 pause=True, pause_iters=1),
+        Scenario("pause-iters-5",
+                 pause=True, pause_iters=5),
+        Scenario("pause-iters-20",
+                 pause=True, pause_iters=20),
+    ]),
+
+
+    # Looking at use of post-copy in relation to bandwidth
+    # available for migration
+    Comparison("post-copy-bandwidth", scenarios = [
+        Scenario("post-copy-bw-100mbs",
+                 post_copy=True, bandwidth=12),
+        Scenario("post-copy-bw-300mbs",
+                 post_copy=True, bandwidth=37),
+        Scenario("post-copy-bw-1gbs",
+                 post_copy=True, bandwidth=125),
+        Scenario("post-copy-bw-10gbs",
+                 post_copy=True, bandwidth=1250),
+        Scenario("post-copy-bw-100gbs",
+                 post_copy=True, bandwidth=12500),
+    ]),
+
+
+    # Looking at effect of starting post-copy at different
+    # stages of the migration
+    Comparison("post-copy-iters", scenarios = [
+        Scenario("post-copy-iters-0",
+                 post_copy=True, post_copy_iters=0),
+        Scenario("post-copy-iters-1",
+                 post_copy=True, post_copy_iters=1),
+        Scenario("post-copy-iters-5",
+                 post_copy=True, post_copy_iters=5),
+        Scenario("post-copy-iters-20",
+                 post_copy=True, post_copy_iters=20),
+    ]),
+
+
+    # Looking at effect of auto-converge with different
+    # throttling percentage step rates
+    Comparison("auto-converge-iters", scenarios = [
+        Scenario("auto-converge-step-5",
+                 auto_converge=True, auto_converge_step=5),
+        Scenario("auto-converge-step-10",
+                 auto_converge=True, auto_converge_step=10),
+        Scenario("auto-converge-step-20",
+                 auto_converge=True, auto_converge_step=20),
+    ]),
+
+
+    # Looking at use of auto-converge in relation to bandwidth
+    # available for migration
+    Comparison("auto-converge-bandwidth", scenarios = [
+        Scenario("auto-converge-bw-100mbs",
+                 auto_converge=True, bandwidth=12),
+        Scenario("auto-converge-bw-300mbs",
+                 auto_converge=True, bandwidth=37),
+        Scenario("auto-converge-bw-1gbs",
+                 auto_converge=True, bandwidth=125),
+        Scenario("auto-converge-bw-10gbs",
+                 auto_converge=True, bandwidth=1250),
+        Scenario("auto-converge-bw-100gbs",
+                 auto_converge=True, bandwidth=12500),
+    ]),
+
+
+    # Looking at effect of multi-thread compression with
+    # varying numbers of threads
+    Comparison("compr-mt", scenarios = [
+        Scenario("compr-mt-threads-1",
+                 compression_mt=True, compression_mt_threads=1),
+        Scenario("compr-mt-threads-2",
+                 compression_mt=True, compression_mt_threads=2),
+        Scenario("compr-mt-threads-4",
+                 compression_mt=True, compression_mt_threads=4),
+    ]),
+
+
+    # Looking at effect of xbzrle compression with varying
+    # cache sizes
+    Comparison("compr-xbzrle", scenarios = [
+        Scenario("compr-xbzrle-cache-5",
+                 compression_xbzrle=True, compression_xbzrle_cache=5),
+        Scenario("compr-xbzrle-cache-10",
+                 compression_xbzrle=True, compression_xbzrle_cache=10),
+        Scenario("compr-xbzrle-cache-20",
+                 compression_xbzrle=True, compression_xbzrle_cache=10),
+        Scenario("compr-xbzrle-cache-50",
+                 compression_xbzrle=True, compression_xbzrle_cache=50),
+    ]),
+]
diff --git a/tests/migration/guestperf/engine.py b/tests/migration/guestperf/engine.py
new file mode 100644
index 0000000000..0a13050bc6
--- /dev/null
+++ b/tests/migration/guestperf/engine.py
@@ -0,0 +1,439 @@
+#
+# Migration test main engine
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+import os
+import re
+import sys
+import time
+
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'scripts'))
+import qemu
+import qmp.qmp
+from guestperf.progress import Progress, ProgressStats
+from guestperf.report import Report
+from guestperf.timings import TimingRecord, Timings
+
+
+class Engine(object):
+
+    def __init__(self, binary, dst_host, kernel, initrd, transport="tcp",
+                 sleep=15, verbose=False, debug=False):
+
+        self._binary = binary # Path to QEMU binary
+        self._dst_host = dst_host # Hostname of target host
+        self._kernel = kernel # Path to kernel image
+        self._initrd = initrd # Path to stress initrd
+        self._transport = transport # 'unix' or 'tcp' or 'rdma'
+        self._sleep = sleep
+        self._verbose = verbose
+        self._debug = debug
+
+        if debug:
+            self._verbose = debug
+
+    def _vcpu_timing(self, pid, tid_list):
+        records = []
+        now = time.time()
+
+        jiffies_per_sec = os.sysconf(os.sysconf_names['SC_CLK_TCK'])
+        for tid in tid_list:
+            statfile = "/proc/%d/task/%d/stat" % (pid, tid)
+            with open(statfile, "r") as fh:
+                stat = fh.readline()
+                fields = stat.split(" ")
+                stime = int(fields[13])
+                utime = int(fields[14])
+                records.append(TimingRecord(tid, now, 1000 * (stime + utime) / jiffies_per_sec))
+        return records
+
+    def _cpu_timing(self, pid):
+        records = []
+        now = time.time()
+
+        jiffies_per_sec = os.sysconf(os.sysconf_names['SC_CLK_TCK'])
+        statfile = "/proc/%d/stat" % pid
+        with open(statfile, "r") as fh:
+            stat = fh.readline()
+            fields = stat.split(" ")
+            stime = int(fields[13])
+            utime = int(fields[14])
+            return TimingRecord(pid, now, 1000 * (stime + utime) / jiffies_per_sec)
+
+    def _migrate_progress(self, vm):
+        info = vm.command("query-migrate")
+
+        if "ram" not in info:
+            info["ram"] = {}
+
+        return Progress(
+            info.get("status", "active"),
+            ProgressStats(
+                info["ram"].get("transferred", 0),
+                info["ram"].get("remaining", 0),
+                info["ram"].get("total", 0),
+                info["ram"].get("duplicate", 0),
+                info["ram"].get("skipped", 0),
+                info["ram"].get("normal", 0),
+                info["ram"].get("normal-bytes", 0),
+                info["ram"].get("dirty-pages-rate", 0),
+                info["ram"].get("mbps", 0),
+                info["ram"].get("dirty-sync-count", 0)
+            ),
+            time.time(),
+            info.get("total-time", 0),
+            info.get("downtime", 0),
+            info.get("expected-downtime", 0),
+            info.get("setup-time", 0),
+            info.get("x-cpu-throttle-percentage", 0),
+        )
+
+    def _migrate(self, hardware, scenario, src, dst, connect_uri):
+        src_qemu_time = []
+        src_vcpu_time = []
+        src_pid = src.get_pid()
+
+        vcpus = src.command("query-cpus")
+        src_threads = []
+        for vcpu in vcpus:
+            src_threads.append(vcpu["thread_id"])
+
+        # XXX how to get dst timings on remote host ?
+
+        if self._verbose:
+            print "Sleeping %d seconds for initial guest workload run" % self._sleep
+        sleep_secs = self._sleep
+        while sleep_secs > 1:
+            src_qemu_time.append(self._cpu_timing(src_pid))
+            src_vcpu_time.extend(self._vcpu_timing(src_pid, src_threads))
+            time.sleep(1)
+            sleep_secs -= 1
+
+        if self._verbose:
+            print "Starting migration"
+        if scenario._auto_converge:
+            resp = src.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "auto-converge",
+                                     "state": True }
+                               ])
+            resp = src.command("migrate-set-parameters",
+                               x_cpu_throttle_increment=scenario._auto_converge_step)
+
+        if scenario._post_copy:
+            resp = src.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "postcopy-ram",
+                                     "state": True }
+                               ])
+            resp = dst.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "postcopy-ram",
+                                     "state": True }
+                               ])
+
+        resp = src.command("migrate_set_speed",
+                           value=scenario._bandwidth * 1024 * 1024)
+
+        resp = src.command("migrate_set_downtime",
+                           value=scenario._downtime / 1024.0)
+
+        if scenario._compression_mt:
+            resp = src.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "compress",
+                                     "state": True }
+                               ])
+            resp = src.command("migrate-set-parameters",
+                               compress_threads=scenario._compression_mt_threads)
+            resp = dst.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "compress",
+                                     "state": True }
+                               ])
+            resp = dst.command("migrate-set-parameters",
+                               decompress_threads=scenario._compression_mt_threads)
+
+        if scenario._compression_xbzrle:
+            resp = src.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "xbzrle",
+                                     "state": True }
+                               ])
+            resp = dst.command("migrate-set-capabilities",
+                               capabilities = [
+                                   { "capability": "xbzrle",
+                                     "state": True }
+                               ])
+            resp = src.command("migrate-set-cache-size",
+                               value=(hardware._mem * 1024 * 1024 * 1024 / 100 *
+                                      scenario._compression_xbzrle_cache))
+
+        resp = src.command("migrate", uri=connect_uri)
+
+        post_copy = False
+        paused = False
+
+        progress_history = []
+
+        start = time.time()
+        loop = 0
+        while True:
+            loop = loop + 1
+            time.sleep(0.05)
+
+            progress = self._migrate_progress(src)
+            if (loop % 20) == 0:
+                src_qemu_time.append(self._cpu_timing(src_pid))
+                src_vcpu_time.extend(self._vcpu_timing(src_pid, src_threads))
+
+            if (len(progress_history) == 0 or
+                (progress_history[-1]._ram._iterations <
+                 progress._ram._iterations)):
+                progress_history.append(progress)
+
+            if progress._status in ("completed", "failed", "cancelled"):
+                if progress._status == "completed" and paused:
+                    dst.command("cont")
+                if progress_history[-1] != progress:
+                    progress_history.append(progress)
+
+                if progress._status == "completed":
+                    if self._verbose:
+                        print "Sleeping %d seconds for final guest workload run" % self._sleep
+                    sleep_secs = self._sleep
+                    while sleep_secs > 1:
+                        time.sleep(1)
+                        src_qemu_time.append(self._cpu_timing(src_pid))
+                        src_vcpu_time.extend(self._vcpu_timing(src_pid, src_threads))
+                        sleep_secs -= 1
+
+                return [progress_history, src_qemu_time, src_vcpu_time]
+
+            if self._verbose and (loop % 20) == 0:
+                print "Iter %d: remain %5dMB of %5dMB (total %5dMB @ %5dMb/sec)" % (
+                    progress._ram._iterations,
+                    progress._ram._remaining_bytes / (1024 * 1024),
+                    progress._ram._total_bytes / (1024 * 1024),
+                    progress._ram._transferred_bytes / (1024 * 1024),
+                    progress._ram._transfer_rate_mbs,
+                )
+
+            if progress._ram._iterations > scenario._max_iters:
+                if self._verbose:
+                    print "No completion after %d iterations over RAM" % scenario._max_iters
+                src.command("migrate_cancel")
+                continue
+
+            if time.time() > (start + scenario._max_time):
+                if self._verbose:
+                    print "No completion after %d seconds" % scenario._max_time
+                src.command("migrate_cancel")
+                continue
+
+            if (scenario._post_copy and
+                progress._ram._iterations >= scenario._post_copy_iters and
+                not post_copy):
+                if self._verbose:
+                    print "Switching to post-copy after %d iterations" % scenario._post_copy_iters
+                resp = src.command("migrate-start-postcopy")
+                post_copy = True
+
+            if (scenario._pause and
+                progress._ram._iterations >= scenario._pause_iters and
+                not paused):
+                if self._verbose:
+                    print "Pausing VM after %d iterations" % scenario._pause_iters
+                resp = src.command("stop")
+                paused = True
+
+    def _get_common_args(self, hardware, tunnelled=False):
+        args = [
+            "noapic",
+            "edd=off",
+            "printk.time=1",
+            "noreplace-smp",
+            "cgroup_disable=memory",
+            "pci=noearly",
+            "console=ttyS0",
+        ]
+        if self._debug:
+            args.append("debug")
+        else:
+            args.append("quiet")
+
+        args.append("ramsize=%s" % hardware._mem)
+
+        cmdline = " ".join(args)
+        if tunnelled:
+            cmdline = "'" + cmdline + "'"
+
+        argv = [
+            "-machine", "accel=kvm",
+            "-cpu", "host",
+            "-kernel", self._kernel,
+            "-initrd", self._initrd,
+            "-append", cmdline,
+            "-chardev", "stdio,id=cdev0",
+            "-device", "isa-serial,chardev=cdev0",
+            "-m", str((hardware._mem * 1024) + 512),
+            "-smp", str(hardware._cpus),
+        ]
+
+        if self._debug:
+            argv.extend(["-device", "sga"])
+
+        if hardware._prealloc_pages:
+            argv_source += ["-mem-path", "/dev/shm",
+                            "-mem-prealloc"]
+        if hardware._locked_pages:
+            argv_source += ["-realtime", "mlock=on"]
+        if hardware._huge_pages:
+            pass
+
+        return argv
+
+    def _get_src_args(self, hardware):
+        return self._get_common_args(hardware)
+
+    def _get_dst_args(self, hardware, uri):
+        tunnelled = False
+        if self._dst_host != "localhost":
+            tunnelled = True
+        argv = self._get_common_args(hardware, tunnelled)
+        return argv + ["-incoming", uri]
+
+    @staticmethod
+    def _get_common_wrapper(cpu_bind, mem_bind):
+        wrapper = []
+        if len(cpu_bind) > 0 or len(mem_bind) > 0:
+            wrapper.append("numactl")
+            if cpu_bind:
+                wrapper.append("--physcpubind=%s" % ",".join(cpu_bind))
+            if mem_bind:
+                wrapper.append("--membind=%s" % ",".join(mem_bind))
+
+        return wrapper
+
+    def _get_src_wrapper(self, hardware):
+        return self._get_common_wrapper(hardware._src_cpu_bind, hardware._src_mem_bind)
+
+    def _get_dst_wrapper(self, hardware):
+        wrapper = self._get_common_wrapper(hardware._dst_cpu_bind, hardware._dst_mem_bind)
+        if self._dst_host != "localhost":
+            return ["ssh",
+                    "-R", "9001:localhost:9001",
+                    self._dst_host] + wrapper
+        else:
+            return wrapper
+
+    def _get_timings(self, vm):
+        log = vm.get_log()
+        if not log:
+            return []
+        if self._debug:
+            print log
+
+        regex = r"[^\s]+\s\((\d+)\):\sINFO:\s(\d+)ms\scopied\s\d+\sGB\sin\s(\d+)ms"
+        matcher = re.compile(regex)
+        records = []
+        for line in log.split("\n"):
+            match = matcher.match(line)
+            if match:
+                records.append(TimingRecord(int(match.group(1)),
+                                            int(match.group(2)) / 1000.0,
+                                            int(match.group(3))))
+        return records
+
+    def run(self, hardware, scenario, result_dir=os.getcwd()):
+        abs_result_dir = os.path.join(result_dir, scenario._name)
+
+        if self._transport == "tcp":
+            uri = "tcp:%s:9000" % self._dst_host
+        elif self._transport == "rdma":
+            uri = "rdma:%s:9000" % self._dst_host
+        elif self._transport == "unix":
+            if self._dst_host != "localhost":
+                raise Exception("Running use unix migration transport for non-local host")
+            uri = "unix:/var/tmp/qemu-migrate-%d.migrate" % os.getpid()
+            try:
+                os.remove(uri[5:])
+                os.remove(monaddr)
+            except:
+                pass
+
+        if self._dst_host != "localhost":
+            dstmonaddr = ("localhost", 9001)
+        else:
+            dstmonaddr = "/var/tmp/qemu-dst-%d-monitor.sock" % os.getpid()
+        srcmonaddr = "/var/tmp/qemu-src-%d-monitor.sock" % os.getpid()
+
+        src = qemu.QEMUMachine(self._binary,
+                               args=self._get_src_args(hardware),
+                               wrapper=self._get_src_wrapper(hardware),
+                               name="qemu-src-%d" % os.getpid(),
+                               monitor_address=srcmonaddr,
+                               debug=self._debug)
+
+        dst = qemu.QEMUMachine(self._binary,
+                               args=self._get_dst_args(hardware, uri),
+                               wrapper=self._get_dst_wrapper(hardware),
+                               name="qemu-dst-%d" % os.getpid(),
+                               monitor_address=dstmonaddr,
+                               debug=self._debug)
+
+        try:
+            src.launch()
+            dst.launch()
+
+            ret = self._migrate(hardware, scenario, src, dst, uri)
+            progress_history = ret[0]
+            qemu_timings = ret[1]
+            vcpu_timings = ret[2]
+            if uri[0:5] == "unix:":
+                os.remove(uri[5:])
+            if self._verbose:
+                print "Finished migration"
+
+            src.shutdown()
+            dst.shutdown()
+
+            return Report(hardware, scenario, progress_history,
+                          Timings(self._get_timings(src) + self._get_timings(dst)),
+                          Timings(qemu_timings),
+                          Timings(vcpu_timings),
+                          self._binary, self._dst_host, self._kernel,
+                          self._initrd, self._transport, self._sleep)
+        except Exception as e:
+            if self._debug:
+                print "Failed: %s" % str(e)
+            try:
+                src.shutdown()
+            except:
+                pass
+            try:
+                dst.shutdown()
+            except:
+                pass
+
+            if self._debug:
+                print src.get_log()
+                print dst.get_log()
+            raise
+
diff --git a/tests/migration/guestperf/hardware.py b/tests/migration/guestperf/hardware.py
new file mode 100644
index 0000000000..a66c9dd180
--- /dev/null
+++ b/tests/migration/guestperf/hardware.py
@@ -0,0 +1,62 @@
+#
+# Migration test hardware configuration description
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+class Hardware(object):
+    def __init__(self, cpus=1, mem=1,
+                 src_cpu_bind=None, src_mem_bind=None,
+                 dst_cpu_bind=None, dst_mem_bind=None,
+                 prealloc_pages = False,
+                 huge_pages=False, locked_pages=False):
+        self._cpus = cpus
+        self._mem = mem # GiB
+        self._src_mem_bind = src_mem_bind # List of NUMA nodes
+        self._src_cpu_bind = src_cpu_bind # List of pCPUs
+        self._dst_mem_bind = dst_mem_bind # List of NUMA nodes
+        self._dst_cpu_bind = dst_cpu_bind # List of pCPUs
+        self._prealloc_pages = prealloc_pages
+        self._huge_pages = huge_pages
+        self._locked_pages = locked_pages
+
+
+    def serialize(self):
+        return {
+            "cpus": self._cpus,
+            "mem": self._mem,
+            "src_mem_bind": self._src_mem_bind,
+            "dst_mem_bind": self._dst_mem_bind,
+            "src_cpu_bind": self._src_cpu_bind,
+            "dst_cpu_bind": self._dst_cpu_bind,
+            "prealloc_pages": self._prealloc_pages,
+            "huge_pages": self._huge_pages,
+            "locked_pages": self._locked_pages,
+        }
+
+    @classmethod
+    def deserialize(cls, data):
+        return cls(
+            data["cpus"],
+            data["mem"],
+            data["src_cpu_bind"],
+            data["src_mem_bind"],
+            data["dst_cpu_bind"],
+            data["dst_mem_bind"],
+            data["prealloc_pages"],
+            data["huge_pages"],
+            data["locked_pages"])
diff --git a/tests/migration/guestperf/plot.py b/tests/migration/guestperf/plot.py
new file mode 100644
index 0000000000..bc42249e16
--- /dev/null
+++ b/tests/migration/guestperf/plot.py
@@ -0,0 +1,623 @@
+#
+# Migration test graph plotting
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+
+
+class Plot(object):
+
+    # Generated using
+    # http://tools.medialab.sciences-po.fr/iwanthue/
+    COLORS = ["#CD54D0",
+              "#79D94C",
+              "#7470CD",
+              "#D2D251",
+              "#863D79",
+              "#76DDA6",
+              "#D4467B",
+              "#61923D",
+              "#CB9CCA",
+              "#D98F36",
+              "#8CC8DA",
+              "#CE4831",
+              "#5E7693",
+              "#9B803F",
+              "#412F4C",
+              "#CECBA6",
+              "#6D3229",
+              "#598B73",
+              "#C8827C",
+              "#394427"]
+
+    def __init__(self,
+                 reports,
+                 migration_iters,
+                 total_guest_cpu,
+                 split_guest_cpu,
+                 qemu_cpu,
+                 vcpu_cpu):
+
+        self._reports = reports
+        self._migration_iters = migration_iters
+        self._total_guest_cpu = total_guest_cpu
+        self._split_guest_cpu = split_guest_cpu
+        self._qemu_cpu = qemu_cpu
+        self._vcpu_cpu = vcpu_cpu
+        self._color_idx = 0
+
+    def _next_color(self):
+        color = self.COLORS[self._color_idx]
+        self._color_idx += 1
+        if self._color_idx >= len(self.COLORS):
+            self._color_idx = 0
+        return color
+
+    def _get_progress_label(self, progress):
+        if progress:
+            return "\n\n" + "\n".join(
+                ["Status: %s" % progress._status,
+                 "Iteration: %d" % progress._ram._iterations,
+                 "Throttle: %02d%%" % progress._throttle_pcent,
+                 "Dirty rate: %dMB/s" % (progress._ram._dirty_rate_pps * 4 / 1024.0)])
+        else:
+            return "\n\n" + "\n".join(
+                ["Status: %s" % "none",
+                 "Iteration: %d" % 0])
+
+    def _find_start_time(self, report):
+        startqemu = report._qemu_timings._records[0]._timestamp
+        startguest = report._guest_timings._records[0]._timestamp
+        if startqemu < startguest:
+            return startqemu
+        else:
+            return stasrtguest
+
+    def _get_guest_max_value(self, report):
+        maxvalue = 0
+        for record in report._guest_timings._records:
+            if record._value > maxvalue:
+                maxvalue = record._value
+        return maxvalue
+
+    def _get_qemu_max_value(self, report):
+        maxvalue = 0
+        oldvalue = None
+        oldtime = None
+        for record in report._qemu_timings._records:
+            if oldvalue is not None:
+                cpudelta = (record._value - oldvalue) / 1000.0
+                timedelta = record._timestamp - oldtime
+                if timedelta == 0:
+                    continue
+                util = cpudelta / timedelta * 100.0
+            else:
+                util = 0
+            oldvalue = record._value
+            oldtime = record._timestamp
+
+            if util > maxvalue:
+                maxvalue = util
+        return maxvalue
+
+    def _get_total_guest_cpu_graph(self, report, starttime):
+        xaxis = []
+        yaxis = []
+        labels = []
+        progress_idx = -1
+        for record in report._guest_timings._records:
+            while ((progress_idx + 1) < len(report._progress_history) and
+                   report._progress_history[progress_idx + 1]._now < record._timestamp):
+                progress_idx = progress_idx + 1
+
+            if progress_idx >= 0:
+                progress = report._progress_history[progress_idx]
+            else:
+                progress = None
+
+            xaxis.append(record._timestamp - starttime)
+            yaxis.append(record._value)
+            labels.append(self._get_progress_label(progress))
+
+        from plotly import graph_objs as go
+        return go.Scatter(x=xaxis,
+                          y=yaxis,
+                          name="Guest PIDs: %s" % report._scenario._name,
+                          mode='lines',
+                          line={
+                              "dash": "solid",
+                              "color": self._next_color(),
+                              "shape": "linear",
+                              "width": 1
+                          },
+                          text=labels)
+
+    def _get_split_guest_cpu_graphs(self, report, starttime):
+        threads = {}
+        for record in report._guest_timings._records:
+            if record._tid in threads:
+                continue
+            threads[record._tid] = {
+                "xaxis": [],
+                "yaxis": [],
+                "labels": [],
+            }
+
+        progress_idx = -1
+        for record in report._guest_timings._records:
+            while ((progress_idx + 1) < len(report._progress_history) and
+                   report._progress_history[progress_idx + 1]._now < record._timestamp):
+                progress_idx = progress_idx + 1
+
+            if progress_idx >= 0:
+                progress = report._progress_history[progress_idx]
+            else:
+                progress = None
+
+            threads[record._tid]["xaxis"].append(record._timestamp - starttime)
+            threads[record._tid]["yaxis"].append(record._value)
+            threads[record._tid]["labels"].append(self._get_progress_label(progress))
+
+
+        graphs = []
+        from plotly import graph_objs as go
+        for tid in threads.keys():
+            graphs.append(
+                go.Scatter(x=threads[tid]["xaxis"],
+                           y=threads[tid]["yaxis"],
+                           name="PID %s: %s" % (tid, report._scenario._name),
+                           mode="lines",
+                           line={
+                               "dash": "solid",
+                               "color": self._next_color(),
+                               "shape": "linear",
+                               "width": 1
+                           },
+                           text=threads[tid]["labels"]))
+        return graphs
+
+    def _get_migration_iters_graph(self, report, starttime):
+        xaxis = []
+        yaxis = []
+        labels = []
+        for progress in report._progress_history:
+            xaxis.append(progress._now - starttime)
+            yaxis.append(0)
+            labels.append(self._get_progress_label(progress))
+
+        from plotly import graph_objs as go
+        return go.Scatter(x=xaxis,
+                          y=yaxis,
+                          text=labels,
+                          name="Migration iterations",
+                          mode="markers",
+                          marker={
+                              "color": self._next_color(),
+                              "symbol": "star",
+                              "size": 5
+                          })
+
+    def _get_qemu_cpu_graph(self, report, starttime):
+        xaxis = []
+        yaxis = []
+        labels = []
+        progress_idx = -1
+
+        first = report._qemu_timings._records[0]
+        abstimestamps = [first._timestamp]
+        absvalues = [first._value]
+
+        for record in report._qemu_timings._records[1:]:
+            while ((progress_idx + 1) < len(report._progress_history) and
+                   report._progress_history[progress_idx + 1]._now < record._timestamp):
+                progress_idx = progress_idx + 1
+
+            if progress_idx >= 0:
+                progress = report._progress_history[progress_idx]
+            else:
+                progress = None
+
+            oldvalue = absvalues[-1]
+            oldtime = abstimestamps[-1]
+
+            cpudelta = (record._value - oldvalue) / 1000.0
+            timedelta = record._timestamp - oldtime
+            if timedelta == 0:
+                continue
+            util = cpudelta / timedelta * 100.0
+
+            abstimestamps.append(record._timestamp)
+            absvalues.append(record._value)
+
+            xaxis.append(record._timestamp - starttime)
+            yaxis.append(util)
+            labels.append(self._get_progress_label(progress))
+
+        from plotly import graph_objs as go
+        return go.Scatter(x=xaxis,
+                          y=yaxis,
+                          yaxis="y2",
+                          name="QEMU: %s" % report._scenario._name,
+                          mode='lines',
+                          line={
+                              "dash": "solid",
+                              "color": self._next_color(),
+                              "shape": "linear",
+                              "width": 1
+                          },
+                          text=labels)
+
+    def _get_vcpu_cpu_graphs(self, report, starttime):
+        threads = {}
+        for record in report._vcpu_timings._records:
+            if record._tid in threads:
+                continue
+            threads[record._tid] = {
+                "xaxis": [],
+                "yaxis": [],
+                "labels": [],
+                "absvalue": [record._value],
+                "abstime": [record._timestamp],
+            }
+
+        progress_idx = -1
+        for record in report._vcpu_timings._records:
+            while ((progress_idx + 1) < len(report._progress_history) and
+                   report._progress_history[progress_idx + 1]._now < record._timestamp):
+                progress_idx = progress_idx + 1
+
+            if progress_idx >= 0:
+                progress = report._progress_history[progress_idx]
+            else:
+                progress = None
+
+            oldvalue = threads[record._tid]["absvalue"][-1]
+            oldtime = threads[record._tid]["abstime"][-1]
+
+            cpudelta = (record._value - oldvalue) / 1000.0
+            timedelta = record._timestamp - oldtime
+            if timedelta == 0:
+                continue
+            util = cpudelta / timedelta * 100.0
+            if util > 100:
+                util = 100
+
+            threads[record._tid]["absvalue"].append(record._value)
+            threads[record._tid]["abstime"].append(record._timestamp)
+
+            threads[record._tid]["xaxis"].append(record._timestamp - starttime)
+            threads[record._tid]["yaxis"].append(util)
+            threads[record._tid]["labels"].append(self._get_progress_label(progress))
+
+
+        graphs = []
+        from plotly import graph_objs as go
+        for tid in threads.keys():
+            graphs.append(
+                go.Scatter(x=threads[tid]["xaxis"],
+                           y=threads[tid]["yaxis"],
+                           yaxis="y2",
+                           name="VCPU %s: %s" % (tid, report._scenario._name),
+                           mode="lines",
+                           line={
+                               "dash": "solid",
+                               "color": self._next_color(),
+                               "shape": "linear",
+                               "width": 1
+                           },
+                           text=threads[tid]["labels"]))
+        return graphs
+
+    def _generate_chart_report(self, report):
+        graphs = []
+        starttime = self._find_start_time(report)
+        if self._total_guest_cpu:
+            graphs.append(self._get_total_guest_cpu_graph(report, starttime))
+        if self._split_guest_cpu:
+            graphs.extend(self._get_split_guest_cpu_graphs(report, starttime))
+        if self._qemu_cpu:
+            graphs.append(self._get_qemu_cpu_graph(report, starttime))
+        if self._vcpu_cpu:
+            graphs.extend(self._get_vcpu_cpu_graphs(report, starttime))
+        if self._migration_iters:
+            graphs.append(self._get_migration_iters_graph(report, starttime))
+        return graphs
+
+    def _generate_annotation(self, starttime, progress):
+        return {
+            "text": progress._status,
+            "x": progress._now - starttime,
+            "y": 10,
+        }
+
+    def _generate_annotations(self, report):
+        starttime = self._find_start_time(report)
+        annotations = {}
+        started = False
+        for progress in report._progress_history:
+            if progress._status == "setup":
+                continue
+            if progress._status not in annotations:
+                annotations[progress._status] = self._generate_annotation(starttime, progress)
+
+        return annotations.values()
+
+    def _generate_chart(self):
+        from plotly.offline import plot
+        from plotly import graph_objs as go
+
+        graphs = []
+        yaxismax = 0
+        yaxismax2 = 0
+        for report in self._reports:
+            graphs.extend(self._generate_chart_report(report))
+
+            maxvalue = self._get_guest_max_value(report)
+            if maxvalue > yaxismax:
+                yaxismax = maxvalue
+
+            maxvalue = self._get_qemu_max_value(report)
+            if maxvalue > yaxismax2:
+                yaxismax2 = maxvalue
+
+        yaxismax += 100
+        if not self._qemu_cpu:
+            yaxismax2 = 110
+        yaxismax2 += 10
+
+        annotations = []
+        if self._migration_iters:
+            for report in self._reports:
+                annotations.extend(self._generate_annotations(report))
+
+        layout = go.Layout(title="Migration comparison",
+                           xaxis={
+                               "title": "Wallclock time (secs)",
+                               "showgrid": False,
+                           },
+                           yaxis={
+                               "title": "Memory update speed (ms/GB)",
+                               "showgrid": False,
+                               "range": [0, yaxismax],
+                           },
+                           yaxis2={
+                               "title": "Hostutilization (%)",
+                               "overlaying": "y",
+                               "side": "right",
+                               "range": [0, yaxismax2],
+                               "showgrid": False,
+                           },
+                           annotations=annotations)
+
+        figure = go.Figure(data=graphs, layout=layout)
+
+        return plot(figure,
+                    show_link=False,
+                    include_plotlyjs=False,
+                    output_type="div")
+
+
+    def _generate_report(self):
+        pieces = []
+        for report in self._reports:
+            pieces.append("""
+<h3>Report %s</h3>
+<table>
+""" % report._scenario._name)
+
+            pieces.append("""
+  <tr class="subhead">
+    <th colspan="2">Test config</th>
+  </tr>
+  <tr>
+    <th>Emulator:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Kernel:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Ramdisk:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Transport:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Host:</th>
+    <td>%s</td>
+  </tr>
+""" % (report._binary, report._kernel,
+       report._initrd, report._transport, report._dst_host))
+
+            hardware = report._hardware
+            pieces.append("""
+  <tr class="subhead">
+    <th colspan="2">Hardware config</th>
+  </tr>
+  <tr>
+    <th>CPUs:</th>
+    <td>%d</td>
+  </tr>
+  <tr>
+    <th>RAM:</th>
+    <td>%d GB</td>
+  </tr>
+  <tr>
+    <th>Source CPU bind:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Source RAM bind:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Dest CPU bind:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Dest RAM bind:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Preallocate RAM:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Locked RAM:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Huge pages:</th>
+    <td>%s</td>
+  </tr>
+""" % (hardware._cpus, hardware._mem,
+       ",".join(hardware._src_cpu_bind),
+       ",".join(hardware._src_mem_bind),
+       ",".join(hardware._dst_cpu_bind),
+       ",".join(hardware._dst_mem_bind),
+       "yes" if hardware._prealloc_pages else "no",
+       "yes" if hardware._locked_pages else "no",
+       "yes" if hardware._huge_pages else "no"))
+
+            scenario = report._scenario
+            pieces.append("""
+  <tr class="subhead">
+    <th colspan="2">Scenario config</th>
+  </tr>
+  <tr>
+    <th>Max downtime:</th>
+    <td>%d milli-sec</td>
+  </tr>
+  <tr>
+    <th>Max bandwidth:</th>
+    <td>%d MB/sec</td>
+  </tr>
+  <tr>
+    <th>Max iters:</th>
+    <td>%d</td>
+  </tr>
+  <tr>
+    <th>Max time:</th>
+    <td>%d secs</td>
+  </tr>
+  <tr>
+    <th>Pause:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Pause iters:</th>
+    <td>%d</td>
+  </tr>
+  <tr>
+    <th>Post-copy:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Post-copy iters:</th>
+    <td>%d</td>
+  </tr>
+  <tr>
+    <th>Auto-converge:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>Auto-converge iters:</th>
+    <td>%d</td>
+  </tr>
+  <tr>
+    <th>MT compression:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>MT compression threads:</th>
+    <td>%d</td>
+  </tr>
+  <tr>
+    <th>XBZRLE compression:</th>
+    <td>%s</td>
+  </tr>
+  <tr>
+    <th>XBZRLE compression cache:</th>
+    <td>%d%% of RAM</td>
+  </tr>
+""" % (scenario._downtime, scenario._bandwidth,
+       scenario._max_iters, scenario._max_time,
+       "yes" if scenario._pause else "no", scenario._pause_iters,
+       "yes" if scenario._post_copy else "no", scenario._post_copy_iters,
+       "yes" if scenario._auto_converge else "no", scenario._auto_converge_step,
+       "yes" if scenario._compression_mt else "no", scenario._compression_mt_threads,
+       "yes" if scenario._compression_xbzrle else "no", scenario._compression_xbzrle_cache))
+
+            pieces.append("""
+</table>
+""")
+
+        return "\n".join(pieces)
+
+    def _generate_style(self):
+        return """
+#report table tr th {
+    text-align: right;
+}
+#report table tr td {
+    text-align: left;
+}
+#report table tr.subhead th {
+    background: rgb(192, 192, 192);
+    text-align: center;
+}
+
+"""
+
+    def generate_html(self, fh):
+        print >>fh, """<html>
+  <head>
+    <script type="text/javascript" src="plotly.min.js">
+    </script>
+    <style type="text/css">
+%s
+    </style>
+    <title>Migration report</title>
+  </head>
+  <body>
+    <h1>Migration report</h1>
+    <h2>Chart summary</h2>
+    <div id="chart">
+""" % self._generate_style()
+        print >>fh, self._generate_chart()
+        print >>fh, """
+    </div>
+    <h2>Report details</h2>
+    <div id="report">
+"""
+        print >>fh, self._generate_report()
+        print >>fh, """
+    </div>
+  </body>
+</html>
+"""
+
+    def generate(self, filename):
+        if filename is None:
+            self.generate_html(sys.stdout)
+        else:
+            with open(filename, "w") as fh:
+                self.generate_html(fh)
diff --git a/tests/migration/guestperf/progress.py b/tests/migration/guestperf/progress.py
new file mode 100644
index 0000000000..46d2157b83
--- /dev/null
+++ b/tests/migration/guestperf/progress.py
@@ -0,0 +1,117 @@
+#
+# Migration test migration operation progress
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+class ProgressStats(object):
+
+    def __init__(self,
+                 transferred_bytes,
+                 remaining_bytes,
+                 total_bytes,
+                 duplicate_pages,
+                 skipped_pages,
+                 normal_pages,
+                 normal_bytes,
+                 dirty_rate_pps,
+                 transfer_rate_mbs,
+                 iterations):
+        self._transferred_bytes = transferred_bytes
+        self._remaining_bytes = remaining_bytes
+        self._total_bytes = total_bytes
+        self._duplicate_pages = duplicate_pages
+        self._skipped_pages = skipped_pages
+        self._normal_pages = normal_pages
+        self._normal_bytes = normal_bytes
+        self._dirty_rate_pps = dirty_rate_pps
+        self._transfer_rate_mbs = transfer_rate_mbs
+        self._iterations = iterations
+
+    def serialize(self):
+        return {
+            "transferred_bytes": self._transferred_bytes,
+            "remaining_bytes": self._remaining_bytes,
+            "total_bytes": self._total_bytes,
+            "duplicate_pages": self._duplicate_pages,
+            "skipped_pages": self._skipped_pages,
+            "normal_pages": self._normal_pages,
+            "normal_bytes": self._normal_bytes,
+            "dirty_rate_pps": self._dirty_rate_pps,
+            "transfer_rate_mbs": self._transfer_rate_mbs,
+            "iterations": self._iterations,
+        }
+
+    @classmethod
+    def deserialize(cls, data):
+        return cls(
+            data["transferred_bytes"],
+            data["remaining_bytes"],
+            data["total_bytes"],
+            data["duplicate_pages"],
+            data["skipped_pages"],
+            data["normal_pages"],
+            data["normal_bytes"],
+            data["dirty_rate_pps"],
+            data["transfer_rate_mbs"],
+            data["iterations"])
+
+
+class Progress(object):
+
+    def __init__(self,
+                 status,
+                 ram,
+                 now,
+                 duration,
+                 downtime,
+                 downtime_expected,
+                 setup_time,
+                 throttle_pcent):
+
+        self._status = status
+        self._ram = ram
+        self._now = now
+        self._duration = duration
+        self._downtime = downtime
+        self._downtime_expected = downtime_expected
+        self._setup_time = setup_time
+        self._throttle_pcent = throttle_pcent
+
+    def serialize(self):
+        return {
+            "status": self._status,
+            "ram": self._ram.serialize(),
+            "now": self._now,
+            "duration": self._duration,
+            "downtime": self._downtime,
+            "downtime_expected": self._downtime_expected,
+            "setup_time": self._setup_time,
+            "throttle_pcent": self._throttle_pcent,
+        }
+
+    @classmethod
+    def deserialize(cls, data):
+        return cls(
+            data["status"],
+            ProgressStats.deserialize(data["ram"]),
+            data["now"],
+            data["duration"],
+            data["downtime"],
+            data["downtime_expected"],
+            data["setup_time"],
+            data["throttle_pcent"])
diff --git a/tests/migration/guestperf/report.py b/tests/migration/guestperf/report.py
new file mode 100644
index 0000000000..6a1f971496
--- /dev/null
+++ b/tests/migration/guestperf/report.py
@@ -0,0 +1,98 @@
+#
+# Migration test output result reporting
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+import json
+
+from guestperf.hardware import Hardware
+from guestperf.scenario import Scenario
+from guestperf.progress import Progress
+from guestperf.timings import Timings
+
+class Report(object):
+
+    def __init__(self,
+                 hardware,
+                 scenario,
+                 progress_history,
+                 guest_timings,
+                 qemu_timings,
+                 vcpu_timings,
+                 binary,
+                 dst_host,
+                 kernel,
+                 initrd,
+                 transport,
+                 sleep):
+
+        self._hardware = hardware
+        self._scenario = scenario
+        self._progress_history = progress_history
+        self._guest_timings = guest_timings
+        self._qemu_timings = qemu_timings
+        self._vcpu_timings = vcpu_timings
+        self._binary = binary
+        self._dst_host = dst_host
+        self._kernel = kernel
+        self._initrd = initrd
+        self._transport = transport
+        self._sleep = sleep
+
+    def serialize(self):
+        return {
+            "hardware": self._hardware.serialize(),
+            "scenario": self._scenario.serialize(),
+            "progress_history": [progress.serialize() for progress in self._progress_history],
+            "guest_timings": self._guest_timings.serialize(),
+            "qemu_timings": self._qemu_timings.serialize(),
+            "vcpu_timings": self._vcpu_timings.serialize(),
+            "binary": self._binary,
+            "dst_host": self._dst_host,
+            "kernel": self._kernel,
+            "initrd": self._initrd,
+            "transport": self._transport,
+            "sleep": self._sleep,
+        }
+
+    @classmethod
+    def deserialize(cls, data):
+        return cls(
+            Hardware.deserialize(data["hardware"]),
+            Scenario.deserialize(data["scenario"]),
+            [Progress.deserialize(record) for record in data["progress_history"]],
+            Timings.deserialize(data["guest_timings"]),
+            Timings.deserialize(data["qemu_timings"]),
+            Timings.deserialize(data["vcpu_timings"]),
+            data["binary"],
+            data["dst_host"],
+            data["kernel"],
+            data["initrd"],
+            data["transport"],
+            data["sleep"])
+
+    def to_json(self):
+        return json.dumps(self.serialize(), indent=4)
+
+    @classmethod
+    def from_json(cls, data):
+        return cls.deserialize(json.loads(data))
+
+    @classmethod
+    def from_json_file(cls, filename):
+        with open(filename, "r") as fh:
+            return cls.deserialize(json.load(fh))
diff --git a/tests/migration/guestperf/scenario.py b/tests/migration/guestperf/scenario.py
new file mode 100644
index 0000000000..705c2e864f
--- /dev/null
+++ b/tests/migration/guestperf/scenario.py
@@ -0,0 +1,95 @@
+#
+# Migration test scenario parameter description
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+class Scenario(object):
+
+    def __init__(self, name,
+                 downtime=500,
+                 bandwidth=125000, # 1000 gig-e, effectively unlimited
+                 max_iters=30,
+                 max_time=300,
+                 pause=False, pause_iters=5,
+                 post_copy=False, post_copy_iters=5,
+                 auto_converge=False, auto_converge_step=10,
+                 compression_mt=False, compression_mt_threads=1,
+                 compression_xbzrle=False, compression_xbzrle_cache=10):
+
+        self._name = name
+
+        # General migration tunables
+        self._downtime = downtime  # milliseconds
+        self._bandwidth = bandwidth # MiB per second
+        self._max_iters = max_iters
+        self._max_time = max_time # seconds
+
+
+        # Strategies for ensuring completion
+        self._pause = pause
+        self._pause_iters = pause_iters
+
+        self._post_copy = post_copy
+        self._post_copy_iters = post_copy_iters
+
+        self._auto_converge = auto_converge
+        self._auto_converge_step = auto_converge_step # percentage CPU time
+
+        self._compression_mt = compression_mt
+        self._compression_mt_threads = compression_mt_threads
+
+        self._compression_xbzrle = compression_xbzrle
+        self._compression_xbzrle_cache = compression_xbzrle_cache # percentage of guest RAM
+
+    def serialize(self):
+        return {
+            "name": self._name,
+            "downtime": self._downtime,
+            "bandwidth": self._bandwidth,
+            "max_iters": self._max_iters,
+            "max_time": self._max_time,
+            "pause": self._pause,
+            "pause_iters": self._pause_iters,
+            "post_copy": self._post_copy,
+            "post_copy_iters": self._post_copy_iters,
+            "auto_converge": self._auto_converge,
+            "auto_converge_step": self._auto_converge_step,
+            "compression_mt": self._compression_mt,
+            "compression_mt_threads": self._compression_mt_threads,
+            "compression_xbzrle": self._compression_xbzrle,
+            "compression_xbzrle_cache": self._compression_xbzrle_cache,
+        }
+
+    @classmethod
+    def deserialize(cls, data):
+        return cls(
+            data["name"],
+            data["downtime"],
+            data["bandwidth"],
+            data["max_iters"],
+            data["max_time"],
+            data["pause"],
+            data["pause_iters"],
+            data["post_copy"],
+            data["post_copy_iters"],
+            data["auto_converge"],
+            data["auto_converge_step"],
+            data["compression_mt"],
+            data["compression_mt_threads"],
+            data["compression_xbzrle"],
+            data["compression_xbzrle_cache"])
diff --git a/tests/migration/guestperf/shell.py b/tests/migration/guestperf/shell.py
new file mode 100644
index 0000000000..185c5697a6
--- /dev/null
+++ b/tests/migration/guestperf/shell.py
@@ -0,0 +1,255 @@
+#
+# Migration test command line shell integration
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+import argparse
+import fnmatch
+import os
+import os.path
+import platform
+import sys
+
+from guestperf.hardware import Hardware
+from guestperf.engine import Engine
+from guestperf.scenario import Scenario
+from guestperf.comparison import COMPARISONS
+from guestperf.plot import Plot
+from guestperf.report import Report
+
+
+class BaseShell(object):
+
+    def __init__(self):
+        parser = argparse.ArgumentParser(description="Migration Test Tool")
+
+        # Test args
+        parser.add_argument("--debug", dest="debug", default=False, action="store_true")
+        parser.add_argument("--verbose", dest="verbose", default=False, action="store_true")
+        parser.add_argument("--sleep", dest="sleep", default=15, type=int)
+        parser.add_argument("--binary", dest="binary", default="/usr/bin/qemu-system-x86_64")
+        parser.add_argument("--dst-host", dest="dst_host", default="localhost")
+        parser.add_argument("--kernel", dest="kernel", default="/boot/vmlinuz-%s" % platform.release())
+        parser.add_argument("--initrd", dest="initrd", default="tests/migration/initrd-stress.img")
+        parser.add_argument("--transport", dest="transport", default="unix")
+
+
+        # Hardware args
+        parser.add_argument("--cpus", dest="cpus", default=1, type=int)
+        parser.add_argument("--mem", dest="mem", default=1, type=int)
+        parser.add_argument("--src-cpu-bind", dest="src_cpu_bind", default="")
+        parser.add_argument("--src-mem-bind", dest="src_mem_bind", default="")
+        parser.add_argument("--dst-cpu-bind", dest="dst_cpu_bind", default="")
+        parser.add_argument("--dst-mem-bind", dest="dst_mem_bind", default="")
+        parser.add_argument("--prealloc-pages", dest="prealloc_pages", default=False)
+        parser.add_argument("--huge-pages", dest="huge_pages", default=False)
+        parser.add_argument("--locked-pages", dest="locked_pages", default=False)
+
+        self._parser = parser
+
+    def get_engine(self, args):
+        return Engine(binary=args.binary,
+                      dst_host=args.dst_host,
+                      kernel=args.kernel,
+                      initrd=args.initrd,
+                      transport=args.transport,
+                      sleep=args.sleep,
+                      debug=args.debug,
+                      verbose=args.verbose)
+
+    def get_hardware(self, args):
+        def split_map(value):
+            if value == "":
+                return []
+            return value.split(",")
+
+        return Hardware(cpus=args.cpus,
+                        mem=args.mem,
+
+                        src_cpu_bind=split_map(args.src_cpu_bind),
+                        src_mem_bind=split_map(args.src_mem_bind),
+                        dst_cpu_bind=split_map(args.dst_cpu_bind),
+                        dst_mem_bind=split_map(args.dst_mem_bind),
+
+                        locked_pages=args.locked_pages,
+                        huge_pages=args.huge_pages,
+                        prealloc_pages=args.prealloc_pages)
+
+
+class Shell(BaseShell):
+
+    def __init__(self):
+        super(Shell, self).__init__()
+
+        parser = self._parser
+
+        parser.add_argument("--output", dest="output", default=None)
+
+        # Scenario args
+        parser.add_argument("--max-iters", dest="max_iters", default=30, type=int)
+        parser.add_argument("--max-time", dest="max_time", default=300, type=int)
+        parser.add_argument("--bandwidth", dest="bandwidth", default=125000, type=int)
+        parser.add_argument("--downtime", dest="downtime", default=500, type=int)
+
+        parser.add_argument("--pause", dest="pause", default=False, action="store_true")
+        parser.add_argument("--pause-iters", dest="pause_iters", default=5, type=int)
+
+        parser.add_argument("--post-copy", dest="post_copy", default=False, action="store_true")
+        parser.add_argument("--post-copy-iters", dest="post_copy_iters", default=5, type=int)
+
+        parser.add_argument("--auto-converge", dest="auto_converge", default=False, action="store_true")
+        parser.add_argument("--auto-converge-step", dest="auto_converge_step", default=10, type=int)
+
+        parser.add_argument("--compression-mt", dest="compression_mt", default=False, action="store_true")
+        parser.add_argument("--compression-mt-threads", dest="compression_mt_threads", default=1, type=int)
+
+        parser.add_argument("--compression-xbzrle", dest="compression_xbzrle", default=False, action="store_true")
+        parser.add_argument("--compression-xbzrle-cache", dest="compression_xbzrle_cache", default=10, type=int)
+
+    def get_scenario(self, args):
+        return Scenario(name="perfreport",
+                        downtime=args.downtime,
+                        bandwidth=args.bandwidth,
+                        max_iters=args.max_iters,
+                        max_time=args.max_time,
+
+                        pause=args.pause,
+                        pause_iters=args.pause_iters,
+
+                        post_copy=args.post_copy,
+                        post_copy_iters=args.post_copy_iters,
+
+                        auto_converge=args.auto_converge,
+                        auto_converge_step=args.auto_converge_step,
+
+                        compression_mt=args.compression_mt,
+                        compression_mt_threads=args.compression_mt_threads,
+
+                        compression_xbzrle=args.compression_xbzrle,
+                        compression_xbzrle_cache=args.compression_xbzrle_cache)
+
+    def run(self, argv):
+        args = self._parser.parse_args(argv)
+
+        engine = self.get_engine(args)
+        hardware = self.get_hardware(args)
+        scenario = self.get_scenario(args)
+
+        try:
+            report = engine.run(hardware, scenario)
+            if args.output is None:
+                print report.to_json()
+            else:
+                with open(args.output, "w") as fh:
+                    print >>fh, report.to_json()
+            return 0
+        except Exception as e:
+            print >>sys.stderr, "Error: %s" % str(e)
+            if args.debug:
+                raise
+            return 1
+
+
+class BatchShell(BaseShell):
+
+    def __init__(self):
+        super(BatchShell, self).__init__()
+
+        parser = self._parser
+
+        parser.add_argument("--filter", dest="filter", default="*")
+        parser.add_argument("--output", dest="output", default=os.getcwd())
+
+    def run(self, argv):
+        args = self._parser.parse_args(argv)
+
+        engine = self.get_engine(args)
+        hardware = self.get_hardware(args)
+
+        try:
+            for comparison in COMPARISONS:
+                compdir = os.path.join(args.output, comparison._name)
+                for scenario in comparison._scenarios:
+                    name = os.path.join(comparison._name, scenario._name)
+                    if not fnmatch.fnmatch(name, args.filter):
+                        if args.verbose:
+                            print "Skipping %s" % name
+                        continue
+
+                    if args.verbose:
+                        print "Running %s" % name
+
+                    dirname = os.path.join(args.output, comparison._name)
+                    filename = os.path.join(dirname, scenario._name + ".json")
+                    if not os.path.exists(dirname):
+                        os.makedirs(dirname)
+                    report = engine.run(hardware, scenario)
+                    with open(filename, "w") as fh:
+                        print >>fh, report.to_json()
+        except Exception as e:
+            print >>sys.stderr, "Error: %s" % str(e)
+            if args.debug:
+                raise
+
+
+class PlotShell(object):
+
+    def __init__(self):
+        super(PlotShell, self).__init__()
+
+        self._parser = argparse.ArgumentParser(description="Migration Test Tool")
+
+        self._parser.add_argument("--output", dest="output", default=None)
+
+        self._parser.add_argument("--debug", dest="debug", default=False, action="store_true")
+        self._parser.add_argument("--verbose", dest="verbose", default=False, action="store_true")
+
+        self._parser.add_argument("--migration-iters", dest="migration_iters", default=False, action="store_true")
+        self._parser.add_argument("--total-guest-cpu", dest="total_guest_cpu", default=False, action="store_true")
+        self._parser.add_argument("--split-guest-cpu", dest="split_guest_cpu", default=False, action="store_true")
+        self._parser.add_argument("--qemu-cpu", dest="qemu_cpu", default=False, action="store_true")
+        self._parser.add_argument("--vcpu-cpu", dest="vcpu_cpu", default=False, action="store_true")
+
+        self._parser.add_argument("reports", nargs='*')
+
+    def run(self, argv):
+        args = self._parser.parse_args(argv)
+
+        if len(args.reports) == 0:
+            print >>sys.stderr, "At least one report required"
+            return 1
+
+        if not (args.qemu_cpu or
+                args.vcpu_cpu or
+                args.total_guest_cpu or
+                args.split_guest_cpu):
+            print >>sys.stderr, "At least one chart type is required"
+            return 1
+
+        reports = []
+        for report in args.reports:
+            reports.append(Report.from_json_file(report))
+
+        plot = Plot(reports,
+                    args.migration_iters,
+                    args.total_guest_cpu,
+                    args.split_guest_cpu,
+                    args.qemu_cpu,
+                    args.vcpu_cpu)
+
+        plot.generate(args.output)
diff --git a/tests/migration/guestperf/timings.py b/tests/migration/guestperf/timings.py
new file mode 100644
index 0000000000..f94d809896
--- /dev/null
+++ b/tests/migration/guestperf/timings.py
@@ -0,0 +1,55 @@
+#
+# Migration test timing records
+#
+# Copyright (c) 2016 Red Hat, Inc.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+#
+
+
+class TimingRecord(object):
+
+    def __init__(self, tid, timestamp, value):
+
+        self._tid = tid
+        self._timestamp = timestamp
+        self._value = value
+
+    def serialize(self):
+        return {
+            "tid": self._tid,
+            "timestamp": self._timestamp,
+            "value": self._value
+        }
+
+    @classmethod
+    def deserialize(cls, data):
+        return cls(
+            data["tid"],
+            data["timestamp"],
+            data["value"])
+
+
+class Timings(object):
+
+    def __init__(self, records):
+
+        self._records = records
+
+    def serialize(self):
+        return [record.serialize() for record in self._records]
+
+    @classmethod
+    def deserialize(cls, data):
+        return Timings([TimingRecord.deserialize(record) for record in data])
diff --git a/tests/migration/stress.c b/tests/migration/stress.c
new file mode 100644
index 0000000000..cf8ce8b16d
--- /dev/null
+++ b/tests/migration/stress.c
@@ -0,0 +1,367 @@
+/*
+ * Migration stress workload
+ *
+ * Copyright (c) 2016 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <getopt.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/reboot.h>
+#include <sys/syscall.h>
+#include <linux/random.h>
+#include <sys/time.h>
+#include <pthread.h>
+#include <fcntl.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+const char *argv0;
+
+#define PAGE_SIZE 4096
+
+static int gettid(void)
+{
+    return syscall(SYS_gettid);
+}
+
+static __attribute__((noreturn)) void exit_failure(void)
+{
+    if (getpid() == 1) {
+        sync();
+        reboot(RB_POWER_OFF);
+        fprintf(stderr, "%s (%05d): ERROR: cannot reboot: %s\n",
+                argv0, gettid(), strerror(errno));
+        abort();
+    } else {
+        exit(1);
+    }
+}
+
+static __attribute__((noreturn)) void exit_success(void)
+{
+    if (getpid() == 1) {
+        sync();
+        reboot(RB_POWER_OFF);
+        fprintf(stderr, "%s (%05d): ERROR: cannot reboot: %s\n",
+                argv0, gettid(), strerror(errno));
+        abort();
+    } else {
+        exit(0);
+    }
+}
+
+static int get_command_arg_str(const char *name,
+                               char **val)
+{
+    static char line[1024];
+    FILE *fp = fopen("/proc/cmdline", "r");
+    char *start, *end;
+
+    if (fp == NULL) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot open /proc/cmdline: %s\n",
+                argv0, gettid(), strerror(errno));
+        return -1;
+    }
+
+    if (!fgets(line, sizeof line, fp)) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot read /proc/cmdline: %s\n",
+                argv0, gettid(), strerror(errno));
+        fclose(fp);
+        return -1;
+    }
+    fclose(fp);
+
+    start = strstr(line, name);
+    if (!start)
+        return 0;
+
+    start += strlen(name);
+
+    if (*start != '=') {
+        fprintf(stderr, "%s (%05d): ERROR: no value provided for '%s' in /proc/cmdline\n",
+                argv0, gettid(), name);
+    }
+    start++;
+
+    end = strstr(start, " ");
+    if (!end)
+        end = strstr(start, "\n");
+
+    if (end == start) {
+        fprintf(stderr, "%s (%05d): ERROR: no value provided for '%s' in /proc/cmdline\n",
+                argv0, gettid(), name);
+        return -1;
+    }
+
+    if (end)
+        *val = strndup(start, end - start);
+    else
+        *val = strdup(start);
+    return 1;
+}
+
+
+static int get_command_arg_ull(const char *name,
+                               unsigned long long *val)
+{
+    char *valstr;
+    char *end;
+
+    int ret = get_command_arg_str(name, &valstr);
+    if (ret <= 0)
+        return ret;
+
+    errno = 0;
+    *val = strtoll(valstr, &end, 10);
+    if (errno || *end) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot parse %s value %s\n",
+                argv0, gettid(), name, valstr);
+        free(valstr);
+        return -1;
+    }
+    free(valstr);
+    return 0;
+}
+
+
+static int random_bytes(char *buf, size_t len)
+{
+    int fd;
+
+    fd = open("/dev/urandom", O_RDONLY);
+    if (fd < 0) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot open /dev/urandom: %s\n",
+                argv0, gettid(), strerror(errno));
+        return -1;
+    }
+
+    if (read(fd, buf, len) != len) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot read /dev/urandom: %s\n",
+                argv0, gettid(), strerror(errno));
+        close(fd);
+        return -1;
+    }
+
+    close(fd);
+
+    return 0;
+}
+
+
+static unsigned long long now(void)
+{
+    struct timeval tv;
+
+    gettimeofday(&tv, NULL);
+
+    return (tv.tv_sec * 1000ull) + (tv.tv_usec / 1000ull);
+}
+
+static int stressone(unsigned long long ramsizeMB)
+{
+    size_t pagesPerMB = 1024 * 1024 / PAGE_SIZE;
+    char *ram = malloc(ramsizeMB * 1024 * 1024);
+    char *ramptr;
+    size_t i, j, k;
+    char *data = malloc(PAGE_SIZE);
+    char *dataptr;
+    size_t nMB = 0;
+    unsigned long long before, after;
+
+    if (!ram) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot allocate %llu MB of RAM: %s\n",
+                argv0, gettid(), ramsizeMB, strerror(errno));
+        return -1;
+    }
+    if (!data) {
+        fprintf(stderr, "%s (%d): ERROR: cannot allocate %d bytes of RAM: %s\n",
+                argv0, gettid(), PAGE_SIZE, strerror(errno));
+        free(ram);
+        return -1;
+    }
+
+    /* We don't care about initial state, but we do want
+     * to fault it all into RAM, otherwise the first iter
+     * of the loop below will be quite slow. We cna't use
+     * 0x0 as the byte as gcc optimizes that away into a
+     * calloc instead :-) */
+    memset(ram, 0xfe, ramsizeMB * 1024 * 1024);
+
+    if (random_bytes(data, PAGE_SIZE) < 0) {
+        free(ram);
+        free(data);
+        return -1;
+    }
+
+    before = now();
+
+    while (1) {
+
+        ramptr = ram;
+        for (i = 0; i < ramsizeMB; i++, nMB++) {
+            for (j = 0; j < pagesPerMB; j++) {
+                dataptr = data;
+                for (k = 0; k < PAGE_SIZE; k += sizeof(long long)) {
+                    ramptr += sizeof(long long);
+                    dataptr += sizeof(long long);
+                    *(unsigned long long *)ramptr ^= *(unsigned long long *)dataptr;
+                }
+            }
+
+            if (nMB == 1024) {
+                after = now();
+                fprintf(stderr, "%s (%05d): INFO: %06llums copied 1 GB in %05llums\n",
+                        argv0, gettid(), after, after - before);
+                before = now();
+                nMB = 0;
+            }
+        }
+    }
+
+    free(data);
+    free(ram);
+}
+
+
+static void *stressthread(void *arg)
+{
+    unsigned long long ramsizeMB = *(unsigned long long *)arg;
+
+    stressone(ramsizeMB);
+
+    return NULL;
+}
+
+static int stress(unsigned long long ramsizeGB, int ncpus)
+{
+    size_t i;
+    unsigned long long ramsizeMB = ramsizeGB * 1024 / ncpus;
+    ncpus--;
+
+    for (i = 0; i < ncpus; i++) {
+        pthread_t thr;
+        pthread_create(&thr, NULL,
+                       stressthread,   &ramsizeMB);
+    }
+
+    stressone(ramsizeMB);
+
+    return 0;
+}
+
+
+static int mount_misc(const char *fstype, const char *dir)
+{
+    if (mkdir(dir, 0755) < 0 && errno != EEXIST) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot create %s: %s\n",
+                argv0, gettid(), dir, strerror(errno));
+        return -1;
+    }
+
+    if (mount("none", dir, fstype, 0, NULL) < 0) {
+        fprintf(stderr, "%s (%05d): ERROR: cannot mount %s: %s\n",
+                argv0, gettid(), dir, strerror(errno));
+        return -1;
+    }
+
+    return 0;
+}
+
+static int mount_all(void)
+{
+    if (mount_misc("proc", "/proc") < 0 ||
+        mount_misc("sysfs", "/sys") < 0 ||
+        mount_misc("tmpfs", "/dev") < 0)
+        return -1;
+
+    mknod("/dev/urandom", 0777 | S_IFCHR, makedev(1, 9));
+    mknod("/dev/random", 0777 | S_IFCHR, makedev(1, 8));
+
+    return 0;
+}
+
+int main(int argc, char **argv)
+{
+    unsigned long long ramsizeGB = 1;
+    char *end;
+    int ch;
+    int opt_ind = 0;
+    const char *sopt = "hr:c:";
+    struct option lopt[] = {
+        { "help", no_argument, NULL, 'h' },
+        { "ramsize", required_argument, NULL, 'r' },
+        { "cpus", required_argument, NULL, 'c' },
+        { NULL, 0, NULL, 0 }
+    };
+    int ret;
+    int ncpus = 0;
+
+    argv0 = argv[0];
+
+    while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) {
+        switch (ch) {
+        case 'r':
+            errno = 0;
+            ramsizeGB = strtoll(optarg, &end, 10);
+            if (errno != 0 || *end) {
+                fprintf(stderr, "%s (%05d): ERROR: Cannot parse RAM size %s\n",
+                        argv0, gettid(), optarg);
+                exit_failure();
+            }
+            break;
+
+        case 'c':
+            errno = 0;
+            ncpus = strtoll(optarg, &end, 10);
+            if (errno != 0 || *end) {
+                fprintf(stderr, "%s (%05d): ERROR: Cannot parse CPU count %s\n",
+                        argv0, gettid(), optarg);
+                exit_failure();
+            }
+            break;
+
+        case '?':
+        case 'h':
+            fprintf(stderr, "%s: [--help][--ramsize GB][--cpus N]\n", argv0);
+            exit_failure();
+        }
+    }
+
+    if (getpid() == 1) {
+        if (mount_all() < 0)
+            exit_failure();
+
+        ret = get_command_arg_ull("ramsize", &ramsizeGB);
+        if (ret < 0)
+            exit_failure();
+    }
+
+    if (ncpus == 0)
+        ncpus = sysconf(_SC_NPROCESSORS_ONLN);
+
+    fprintf(stdout, "%s (%05d): INFO: RAM %llu GiB across %d CPUs\n",
+            argv0, gettid(), ramsizeGB, ncpus);
+
+    if (stress(ramsizeGB, ncpus) < 0)
+        exit_failure();
+
+    exit_success();
+}