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| author |   Josef Bacik <jbacik@fusionio.com> | 2012-10-15 13:43:18 -0400 |
|---|---|---|
| committer |   Chris Mason <chris.mason@fusionio.com> | 2012-12-16 20:46:26 -0500 |
| commit | 41be1f3b40b87de33cd2e7463dce88596dbdccc4 (patch) | |
| tree | 6b2bd0ec252c70df303ec89b65fce172a9b5e921 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | Btrfs: don't memset new tokens (diff) | |
| download | linux-dev-41be1f3b40b87de33cd2e7463dce88596dbdccc4.tar.xz linux-dev-41be1f3b40b87de33cd2e7463dce88596dbdccc4.zip | |
Btrfs: optimize leaf_space_used
This gets called at least 4 times for every level while adding an object,
and it involves 3 kmapping calls, which on my box take about 5us a piece.
So instead use a token, which brings us down to 1 kmap call and makes this
function take 1/3 of the time per call. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions