lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

perf session: Cache sample objects

Browse Source 
When the sample queue is flushed we free the sample reference objects. Though
we need to malloc new objects when we process further. Stop the malloc/free
orgy and cache the already allocated object for resuage. Only allocate when
the cache is empty.

Performance gain: ~ 10%

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20101130163820.338488630@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Thomas Gleixner
2010-11-30 17:49:53 +00:00
committed by Arnaldo Carvalho de Melo
parent fe17420784
commit 020bb75a6d
2 changed files with 27 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
tools/perf/util/session.h
View File

@@ -18,6 +18,7 @@ struct ordered_samples {
u64 next_flush;
u64 max_timestamp;
struct list_head samples;
struct list_head sample_cache;
struct sample_queue *last_sample;
};