Signed-off-by: Alexey Perevalov <a.pereva...@samsung.com> --- docs/migration.txt | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt index 1b940a8..d0f5a6d 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 it's a postcopy live migration metric, intend to show +when source vCPU was in state 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 could 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). -- 1.9.1
