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>
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index e4a7ff2..5bf6efa 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -19,7 +19,10 @@
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 {