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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-09-17 19:01:10 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-09-17 22:08:26 +0200 |
| commit | 2667de81f3256c944b06abdf2c56c2f192fcb724 (patch) | |
| tree | d642156cfe0c52d2fb7ec1de4a2060018c8e3f8d /tools/perf/builtin-record.c | |
| parent | 850bc73ffcc99cddfb52bc23217c60810c508853 (diff) | |
| download | op-kernel-dev-2667de81f3256c944b06abdf2c56c2f192fcb724.zip op-kernel-dev-2667de81f3256c944b06abdf2c56c2f192fcb724.tar.gz | |
perf_counter: Allow for a wakeup watermark
Currently we wake the mmap() consumer once every PAGE_SIZE of data
and/or once event wakeup_events when specified.
For high speed sampling this results in too many wakeups wrt. the
buffer size, hence change this.
We move the default wakeup limit to 1/4-th the buffer size, and
provide for means to manually specify this limit.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-record.c')
0 files changed, 0 insertions, 0 deletions
