| Message ID | 1495539071-12995-11-git-send-email-a.perevalov@samsung.com |
|---|---|
| State | New |
| Headers | show |
* Alexey Perevalov (a.perevalov@samsung.com) wrote: > Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com> > --- > docs/migration.txt | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/docs/migration.txt b/docs/migration.txt > index 1b940a8..2207c6d 100644 > --- a/docs/migration.txt > +++ b/docs/migration.txt > @@ -402,6 +402,16 @@ will now cause the transition from precopy to postcopy. > It can be issued immediately after migration is started or any > time later on. Issuing it after the end of a migration is harmless. > > +Blocktime is a postcopy live migration metric, intended to show > +how long the source vCPU was in state of interruptable sleep due to pagefault. ^^^^^^ I think it's just 'how long the vCPU' - I don't think 'source' adds anything. > +This value is calculated on destination side. > +To enable postcopy blocktime calculation, enter following command on destination > +monitor: > + > +migrate_set_capability postcopy-blocktime on > + > +Postcopy blocktime can be retrieved by query-migrate qmp command. > + I think other than that it's OK. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> > Note: During the postcopy phase, the bandwidth limits set using > migrate_set_speed is ignored (to avoid delaying requested pages that > the destination is waiting for). > -- > 1.8.3.1 > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
diff --git a/docs/migration.txt b/docs/migration.txt index 1b940a8..2207c6d 100644 --- a/docs/migration.txt +++ b/docs/migration.txt @@ -402,6 +402,16 @@ will now cause the transition from precopy to postcopy. It can be issued immediately after migration is started or any time later on. Issuing it after the end of a migration is harmless. +Blocktime is a postcopy live migration metric, intended to show +how long the source vCPU was in state of interruptable sleep due to pagefault. +This value is calculated on destination side. +To enable postcopy blocktime calculation, enter following command on destination +monitor: + +migrate_set_capability postcopy-blocktime on + +Postcopy blocktime can be retrieved by query-migrate qmp command. + Note: During the postcopy phase, the bandwidth limits set using migrate_set_speed is ignored (to avoid delaying requested pages that the destination is waiting for).
Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com> --- docs/migration.txt | 10 ++++++++++ 1 file changed, 10 insertions(+)