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migration/dirtyrate: Introduce domdirtyrate-calc virsh api

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Introduce domdirtyrate-calc virsh api to start calculating domain's
memory dirty rate:
	# virsh domdirtyrate-calc <domain> [--seconds <sec>]

Signed-off-by: Hao Wang <wanghao232@huawei.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Hao Wang
2021-03-16 20:32:47 +08:00
committed by Michal Privoznik
parent fbe99823e2
commit a2ae2dad06
2 changed files with 75 additions and 0 deletions
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17
docs/manpages/virsh.rst
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@@ -1704,6 +1704,23 @@ states other than "ok" or "error" the command also prints number of
seconds elapsed since the control interface entered its current state.
domdirtyrate-calc
-----------------
**Syntax:**
::
domdirtyrate-calc <domain> [--seconds <sec>]
Calculate an active domain's memory dirty rate which may be expected by
user in order to decide whether it's proper to be migrated out or not.
The ``seconds`` parameter can be used to calculate dirty rate in a
specific time which allows 60s at most now and would be default to 1s
if missing. The calculated dirty rate information is available by calling
'domstats --dirtyrate'.
domdisplay
----------