~hyman <hy...@git.sr.ht> writes: > From: Hyman Huang(黄勇) <yong.hu...@smartx.com> > > Signed-off-by: Markus Armbruster <arm...@redhat.com> > Signed-off-by: Hyman Huang(黄勇) <yong.hu...@smartx.com> > --- > qapi/migration.json | 13 +++++-------- > 1 file changed, 5 insertions(+), 8 deletions(-) > > diff --git a/qapi/migration.json b/qapi/migration.json > index a74ade4d72..62ab151da2 100644 > --- a/qapi/migration.json > +++ b/qapi/migration.json > @@ -519,14 +519,11 @@ > # are present. 'return-path' capability must be enabled to use > # it. (since 8.1) > # > -# @dirty-limit: If enabled, migration will use the dirty-limit > -# algorithim to throttle down guest instead of auto-converge > -# algorithim. Throttle algorithim only works when vCPU's dirtyrate > -# greater than 'vcpu-dirty-limit', read processes in guest os > -# aren't penalized any more, so this algorithim can improve > -# performance of vCPU during live migration. This is an optional > -# performance feature and should not affect the correctness of the > -# existing auto-converge algorithim. (Since 8.1) > +# @dirty-limit: If enabled, migration will throttle vCPUs as needed to > +# keep their dirty page rate within @vcpu-dirty-limit. This can > +# improve responsiveness of large guests during live migration, > +# and can result in more stable read performance. Requires KVM > +# with accelerator property "dirty-ring-size" set. (Since 8.1) > # > # Features: > #
Reviewed-by: Markus Armbruster <arm...@redhat.com>
