On Sat, Jul 23, 2022 at 03:49:14PM +0800, huang...@chinatelecom.cn wrote: > From: Hyman Huang(黄勇) <huang...@chinatelecom.cn> > > Introduce "vcpu-dirty-limit" migration parameter used > to limit dirty page rate during live migration. > > "vcpu-dirty-limit" and "x-vcpu-dirty-limit-period" are > two dirty-limit-related migration parameters, which can > be set before and during live migration by qmp > migrate-set-parameters. > > This two parameters are used to help implement the dirty > page rate limit algo of migration. > > Signed-off-by: Hyman Huang(黄勇) <huang...@chinatelecom.cn> > --- > migration/migration.c | 14 ++++++++++++++ > monitor/hmp-cmds.c | 8 ++++++++ > qapi/migration.json | 18 +++++++++++++++--- > 3 files changed, 37 insertions(+), 3 deletions(-) > > diff --git a/migration/migration.c b/migration/migration.c > index 7b19f85..ed1a47b 100644 > --- a/migration/migration.c > +++ b/migration/migration.c > @@ -117,6 +117,7 @@ > #define DEFAULT_MIGRATE_ANNOUNCE_STEP 100 > > #define DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT_PERIOD 500 /* ms */ > +#define DEFAULT_MIGRATE_VCPU_DIRTY_LIMIT 1 /* MB/s */
This default value also looks a bit weird.. why 1MB/s? Thanks, -- Peter Xu
