| commit | 1cf6aa74b32f18f9b5faf525a93b0c1f609acb1f | |
| author | Lidong Chen <jemmy858585@gmail.com> | |
| Wed, 15 Mar 2017 03:37:33 +0000 (15 11:37 +0800) | ||
| committer | Juan Quintela <quintela@redhat.com> | |
| Thu, 16 Mar 2017 07:58:27 +0000 (16 08:58 +0100) | ||
| tree | 2dec61809940e38c6dee28f8aaf41122f80cbc18 | treesnapshot (tar.gz zip) |
| parent | 4af245dc3e6e5c96405b3edb9d75657504256469 | commitdiff |
migration/block: Avoid invoking blk_drain too frequently
Increase bmds->cur_dirty after submit io, so reduce the frequency
involve into blk_drain, and improve the performance obviously
when block migration.
The performance test result of this patch:
During the block dirty save phase, this patch improve guest os IOPS
from 4.0K to 9.5K. and improve the migration speed from
505856 rsec/s to 855756 rsec/s.
Signed-off-by: Lidong Chen <jemmy858585@gmail.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Increase bmds->cur_dirty after submit io, so reduce the frequency
involve into blk_drain, and improve the performance obviously
when block migration.
The performance test result of this patch:
During the block dirty save phase, this patch improve guest os IOPS
from 4.0K to 9.5K. and improve the migration speed from
505856 rsec/s to 855756 rsec/s.
Signed-off-by: Lidong Chen <jemmy858585@gmail.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
| migration/block.c | diffblobblamehistory |