diff options
| author | Li Zefan <lizf@cn.fujitsu.com> | 2009-11-24 13:26:55 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-11-24 08:49:50 +0100 |
| commit | 079d3f653134e2f2ac99dae28b08c0cc64268103 (patch) | |
| tree | f2b5b4a7ca276f7db6c96c14eaa87d1fe01aef93 /kernel/compat.c | |
| parent | 7d0d39459dab20bf60cac30a1a7d50b286c60cc1 (diff) | |
| download | blackbird-op-linux-079d3f653134e2f2ac99dae28b08c0cc64268103.tar.gz blackbird-op-linux-079d3f653134e2f2ac99dae28b08c0cc64268103.zip | |
perf kmem: Measure kmalloc/kfree CPU ping-pong call-sites
Show statistics for allocations and frees on different cpus:
------------------------------------------------------------------------------------------------------
Callsite | Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag
------------------------------------------------------------------------------------------------------
perf_event_alloc.clone.0+0 | 7504/682 | 7128/648 | 11 | 0 | 5.011%
alloc_buffer_head+16 | 288/57 | 280/56 | 5 | 0 | 2.778%
radix_tree_preload+51 | 296/296 | 288/288 | 1 | 0 | 2.703%
tracepoint_add_probe+32e | 157/31 | 154/30 | 5 | 0 | 1.911%
do_maps_open+0 | 796/12 | 792/12 | 66 | 0 | 0.503%
sock_alloc_send_pskb+16e | 23780/495 | 23744/494 | 48 | 38 | 0.151%
anon_vma_prepare+9a | 3744/44 | 3740/44 | 85 | 0 | 0.107%
d_alloc+21 | 64948/164 | 64944/164 | 396 | 0 | 0.006%
proc_alloc_inode+23 | 262292/676 | 262288/676 | 388 | 0 | 0.002%
create_object+28 | 459600/200 | 459600/200 | 2298 | 71 | 0.000%
journal_start+67 | 14440/40 | 14440/40 | 361 | 0 | 0.000%
get_empty_filp+df | 53504/256 | 53504/256 | 209 | 0 | 0.000%
getname+2a | 823296/4096 | 823296/4096 | 201 | 0 | 0.000%
seq_read+2b0 | 544768/4096 | 544768/4096 | 133 | 0 | 0.000%
seq_open+6d | 17024/128 | 17024/128 | 133 | 0 | 0.000%
mmap_region+2e6 | 11704/88 | 11704/88 | 133 | 0 | 0.000%
single_open+0 | 1072/16 | 1072/16 | 67 | 0 | 0.000%
__alloc_skb+2e | 12544/256 | 12544/256 | 49 | 38 | 0.000%
__sigqueue_alloc+4a | 1296/144 | 1296/144 | 9 | 8 | 0.000%
tracepoint_add_probe+6f | 80/16 | 80/16 | 5 | 0 | 0.000%
------------------------------------------------------------------------------------------------------
...
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: linux-mm@kvack.org <linux-mm@kvack.org>
LKML-Reference: <4B0B6E9F.6020309@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/compat.c')
0 files changed, 0 insertions, 0 deletions
