motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 23:33:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

softmmu/dirtylimit: Implement dirty page rate limit

Browse source 
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) <huangy81@chinatelecom.cn>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Message-Id: <4143f26706d413dd29db0b672fe58b3d3fbe34bc.1656177590.git.huangy81@chinatelecom.cn>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Hyman Huang(黄勇) 2022-06-26 01:38:36 +08:00 • committed by Dr. David Alan Gilbert
parent baa609832e
commit f3b2e38cfb
6 changed files with 324 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

32
hmp-commands.hx
View file

@ -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,
},