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| author |   Joe Thornber <ejt@redhat.com> | 2021-04-13 11:03:45 +0100 |
|---|---|---|
| committer |   Mike Snitzer <snitzer@redhat.com> | 2021-06-04 12:07:22 -0400 |
| commit | be500ed721a6ec8d49bf0814c277ce7162acee0e (patch) | |
| tree | b61c5518a38b187dd2ffd4a830ca64105e41fe2c /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | dm space maps: don't reset space map allocation cursor when committing (diff) | |
| download | linux-dev-be500ed721a6ec8d49bf0814c277ce7162acee0e.tar.xz linux-dev-be500ed721a6ec8d49bf0814c277ce7162acee0e.zip | |
dm space maps: improve performance with inc/dec on ranges of blocks
When we break sharing on btree nodes we typically need to increment
the reference counts to every value held in the node. This can
cause a lot of repeated calls to the space maps. Fix this by changing
the interface to the space map inc/dec methods to take ranges of
adjacent blocks to be operated on.
For installations that are using a lot of snapshots this will reduce
cpu overhead of fundamental operations such as provisioning a new block,
or deleting a snapshot, by as much as 10 times.
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions