diff options
| author | Dan Williams <[email protected]> | 2015-11-11 16:27:38 -0800 |
|---|---|---|
| committer | Tejun Heo <[email protected]> | 2015-11-16 11:29:10 -0500 |
| commit | a6b7fb764ed2a6b7bb1ac96d93c06787aa589092 (patch) | |
| tree | 02bd0d5a1aa33e2fa3cb509ca4607b9ff11558bc /tools/perf/scripts/python/compaction-times.py | |
| parent | d684a90d38e24dcaf95fdb32c83efe05f80d152a (diff) | |
ahci: switch from 'threaded' to 'hardirq' interrupt handling
For high frequency I/O the overhead of threaded interrupts impacts
performance. A quick out-of-the-box test (i.e. no affinity tuning)
shows ~10% random read performance at ~20% less cpu. The cpu wins
appear to be from reduced lock contention.
Signed-off-by: Dan Williams <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/compaction-times.py')
0 files changed, 0 insertions, 0 deletions