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migration/dirtyrate: implement dirty-ring dirtyrate calculation

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use dirty ring feature to implement dirtyrate calculation.

introduce mode option in qmp calc_dirty_rate to specify what
method should be used when calculating dirtyrate, either
page-sampling or dirty-ring should be passed.

introduce "dirty_ring:-r" option in hmp calc_dirty_rate to
indicate dirty ring method should be used for calculation.

Signed-off-by: Hyman Huang(黄勇) <huangy81@chinatelecom.cn>
Message-Id: <7db445109bd18125ce8ec86816d14f6ab5de6a7d.1624040308.git.huangy81@chinatelecom.cn>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Hyman Huang(黄勇) 2021-06-29 16:01:23 +00:00 • committed by Juan Quintela
parent 9865d0f68f
commit 0e21bf2460
4 changed files with 218 additions and 15 deletions
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16
qapi/migration.json
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@ -1796,6 +1796,12 @@
# @sample-pages: page count per GB for sample dirty pages
# the default value is 512 (since 6.1)
#
# @mode: mode containing method of calculate dirtyrate includes
# 'page-sampling' and 'dirty-ring' (Since 6.1)
#
# @vcpu-dirty-rate: dirtyrate for each vcpu if dirty-ring
# mode specified (Since 6.1)
#
# Since: 5.2
#
##
@ -1804,7 +1810,9 @@
'status': 'DirtyRateStatus',
'start-time': 'int64',
'calc-time': 'int64',
'sample-pages': 'uint64'} }
'sample-pages': 'uint64',
'mode': 'DirtyRateMeasureMode',
'*vcpu-dirty-rate': [ 'DirtyRateVcpu' ] } }
##
# @calc-dirty-rate:
@ -1816,6 +1824,9 @@
# @sample-pages: page count per GB for sample dirty pages
# the default value is 512 (since 6.1)
#
# @mode: mechanism of calculating dirtyrate includes
# 'page-sampling' and 'dirty-ring' (Since 6.1)
#
# Since: 5.2
#
# Example:
@ -1824,7 +1835,8 @@
#
##
{ 'command': 'calc-dirty-rate', 'data': {'calc-time': 'int64',
'*sample-pages': 'int'} }
'*sample-pages': 'int',
'*mode': 'DirtyRateMeasureMode'} }
##
# @query-dirty-rate: