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migration/dirtyrate: make sample page count configurable

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introduce optional sample-pages argument in calc-dirty-rate,
making sample page count per GB configurable so that more
accurate dirtyrate can be calculated.

Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Message-Id: <3103453a3b2796f929269c99a6ad81a9a7f1f405.1623027729.git.huangy81@chinatelecom.cn>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  Wrapped a couple of long lines
This commit is contained in:
Hyman Huang(黄勇) 2021-06-07 09:11:34 +08:00 • committed by Dr. David Alan Gilbert
parent 8bd1078aeb
commit 7afa08cd8f
3 changed files with 46 additions and 8 deletions
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15
qapi/migration.json
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@ -1740,6 +1740,9 @@
#
# @calc-time: time in units of second for sample dirty pages
#
# @sample-pages: page count per GB for sample dirty pages
# the default value is 512 (since 6.1)
#
# Since: 5.2
#
##
@ -1747,7 +1750,8 @@
'data': {'*dirty-rate': 'int64',
'status': 'DirtyRateStatus',
'start-time': 'int64',
'calc-time': 'int64'} }
'calc-time': 'int64',
'sample-pages': 'uint64'} }
##
# @calc-dirty-rate:
@ -1756,13 +1760,18 @@
#
# @calc-time: time in units of second for sample dirty pages
#
# @sample-pages: page count per GB for sample dirty pages
# the default value is 512 (since 6.1)
#
# Since: 5.2
#
# Example:
# {"command": "calc-dirty-rate", "data": {"calc-time": 1} }
# {"command": "calc-dirty-rate", "data": {"calc-time": 1,
# 'sample-pages': 512} }
#
##
{ 'command': 'calc-dirty-rate', 'data': {'calc-time': 'int64'} }
{ 'command': 'calc-dirty-rate', 'data': {'calc-time': 'int64',
'*sample-pages': 'int'} }
##
# @query-dirty-rate: