perf bench: Add memcpy() benchmark
'perf bench mem memcpy' is a benchmark suite for measuring memcpy()
performance.
Example on a Intel(R) Core(TM)2 Duo CPU E6850 @ 3.00GHz:
| % perf bench mem memcpy -l 1GB
| # Running mem/memcpy benchmark...
| # Copying 1MB Bytes from 0xb7d98008 to 0xb7e99008 ...
|
| 726.216412 MB/Sec
Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1258471212-30281-1-git-send-email-mitake@dcl.info.waseda.ac.jp>
[ v2: updated changelog, clarified history of builtin-bench.c ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-bench.c b/tools/perf/builtin-bench.c
index 90c39ba..e043eb8 100644
--- a/tools/perf/builtin-bench.c
+++ b/tools/perf/builtin-bench.c
@@ -12,6 +12,7 @@
*
* Available subsystem list:
* sched ... scheduler and IPC mechanism
+ * mem ... memory access performance
*
*/
@@ -43,6 +44,15 @@
NULL }
};
+static struct bench_suite mem_suites[] = {
+ { "memcpy",
+ "Simple memory copy in various ways",
+ bench_mem_memcpy },
+ { NULL,
+ NULL,
+ NULL }
+};
+
struct bench_subsys {
const char *name;
const char *summary;
@@ -53,9 +63,12 @@
{ "sched",
"scheduler and IPC mechanism",
sched_suites },
+ { "mem",
+ "memory access performance",
+ mem_suites },
{ NULL,
NULL,
- NULL }
+ NULL }
};
static void dump_suites(int subsys_index)