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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-11-30 17:49:55 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2010-11-30 20:05:25 -0200 |
| commit | 5c891f3840a7a330c96d7203d4bb5be6fa033724 (patch) | |
| tree | bf8fdacde9410f396e382eebfdb924be479e8d7e /tools/perf/util/session.h | |
| parent | 020bb75a6deeca5ebeae531dc7378c157affc8fd (diff) | |
| download | blackbird-op-linux-5c891f3840a7a330c96d7203d4bb5be6fa033724.tar.gz blackbird-op-linux-5c891f3840a7a330c96d7203d4bb5be6fa033724.zip | |
perf session: Allocate chunks of sample objects
The ordered sample code allocates singular reference objects struct
sample_queue which have 48byte size on 64bit and 20 bytes on 32bit. That's
silly. Allocate ~64k sized chunks and hand them out.
Performance gain: ~ 15%
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20101130163820.398713983@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/session.h')
| -rw-r--r-- | tools/perf/util/session.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index e4a7ff2ba8d5..5bf6efa3788a 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -19,7 +19,10 @@ struct ordered_samples { u64 max_timestamp; struct list_head samples; struct list_head sample_cache; + struct list_head to_free; + struct sample_queue *sample_buffer; struct sample_queue *last_sample; + int sample_buffer_idx; }; struct perf_session { |
