From f3b2e38cfb2ecabe53b96752ebdf80b541a520ab Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Hyman=20Huang=28=E9=BB=84=E5=8B=87=29?= Date: Sun, 26 Jun 2022 01:38:36 +0800 Subject: softmmu/dirtylimit: Implement dirty page rate limit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement dirtyrate calculation periodically basing on dirty-ring and throttle virtual CPU until it reachs the quota dirty page rate given by user. Introduce qmp commands "set-vcpu-dirty-limit", "cancel-vcpu-dirty-limit", "query-vcpu-dirty-limit" to enable, disable, query dirty page limit for virtual CPU. Meanwhile, introduce corresponding hmp commands "set_vcpu_dirty_limit", "cancel_vcpu_dirty_limit", "info vcpu_dirty_limit" so the feature can be more usable. "query-vcpu-dirty-limit" success depends on enabling dirty page rate limit, so just add it to the list of skipped command to ensure qmp-cmd-test run successfully. Signed-off-by: Hyman Huang(黄勇) Acked-by: Markus Armbruster Reviewed-by: Peter Xu Message-Id: <4143f26706d413dd29db0b672fe58b3d3fbe34bc.1656177590.git.huangy81@chinatelecom.cn> Signed-off-by: Dr. David Alan Gilbert --- hmp-commands.hx | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) (limited to 'hmp-commands.hx') diff --git a/hmp-commands.hx b/hmp-commands.hx index c9d465735a..182e639d14 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1768,3 +1768,35 @@ ERST "\n\t\t\t -b to specify dirty bitmap as method of calculation)", .cmd = hmp_calc_dirty_rate, }, + +SRST +``set_vcpu_dirty_limit`` + Set dirty page rate limit on virtual CPU, the information about all the + virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit`` + command. +ERST + + { + .name = "set_vcpu_dirty_limit", + .args_type = "dirty_rate:l,cpu_index:l?", + .params = "dirty_rate [cpu_index]", + .help = "set dirty page rate limit, use cpu_index to set limit" + "\n\t\t\t\t\t on a specified virtual cpu", + .cmd = hmp_set_vcpu_dirty_limit, + }, + +SRST +``cancel_vcpu_dirty_limit`` + Cancel dirty page rate limit on virtual CPU, the information about all the + virtual CPU dirty limit status can be observed with ``info vcpu_dirty_limit`` + command. +ERST + + { + .name = "cancel_vcpu_dirty_limit", + .args_type = "cpu_index:l?", + .params = "[cpu_index]", + .help = "cancel dirty page rate limit, use cpu_index to cancel" + "\n\t\t\t\t\t limit on a specified virtual cpu", + .cmd = hmp_cancel_vcpu_dirty_limit, + }, -- cgit v1.2.3