On 06/07/2017 03:52 PM, Juan Quintela wrote:
Alexey Perevalov <a.pereva...@samsung.com> wrote:
Reviewed-by: Dr. David Alan Gilbert <dgilb...@redhat.com>
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..4b625ca 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 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).
Reviewed-by: Juan Quintela <quint...@redhat.com>
If you have to respin, I think that put the units would be a good idea.
Even you can put the units in the patch where you define the value.
do you mean to extend tests/postcopy-test.c?
--
Best regards,
Alexey Perevalov
