qemu-img bench

This adds a qemu-img command that allows doing some simple benchmarks
for the block layer without involving guest devices and a real VM.

For the start, this implements only a test of sequential reads.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
index e7cded6e24..f3bd546335 100644
--- a/qemu-img-cmds.hx
+++ b/qemu-img-cmds.hx
@@ -9,6 +9,12 @@ STEXI
 @table @option
 ETEXI
 
+DEF("bench", img_bench,
+    "bench [-c count] [-d depth] [-f fmt] [-n] [-q] [-s buffer_size] [-t cache] filename")
+STEXI
+@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-q] [-s @var{buffer_size}] [-t @var{cache}] @var{filename}
+ETEXI
+
 DEF("check", img_check,
     "check [-q] [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [-r [leaks | all]] [-T src_cache] filename")
 STEXI