Li Zefan ba77c9e111 perf: Add 'perf kmem' tool ... This tool is mostly a perf version of kmemtrace-user. The following information is provided by this tool: - the total amount of memory allocated and fragmentation per call-site - the total amount of memory allocated and fragmentation per allocation - total memory allocated and fragmentation in the collected dataset - ... Sample output: # ./perf kmem record ^C # ./perf kmem --stat caller --stat alloc -l 10 ------------------------------------------------------------------------------ Callsite | Total_alloc/Per | Total_req/Per | Hit | Fragmentation ------------------------------------------------------------------------------ 0xc052f37a | 790528/4096 | 790528/4096 | 193 | 0.000% 0xc0541d70 | 524288/4096 | 524288/4096 | 128 | 0.000% 0xc051cc68 | 481600/200 | 481600/200 | 2408 | 0.000% 0xc0572623 | 297444/676 | 297440/676 | 440 | 0.001% 0xc05399f1 | 73476/164 | 73472/164 | 448 | 0.005% 0xc05243bf | 51456/256 | 51456/256 | 201 | 0.000% 0xc0730d0e | 31844/497 | 31808/497 | 64 | 0.113% 0xc0734c4e | 17152/256 | 17152/256 | 67 | 0.000% 0xc0541a6d | 16384/128 | 16384/128 | 128 | 0.000% 0xc059c217 | 13120/40 | 13120/40 | 328 | 0.000% 0xc0501ee6 | 11264/88 | 11264/88 | 128 | 0.000% 0xc04daef0 | 7504/682 | 7128/648 | 11 | 5.011% 0xc04e14a3 | 4216/191 | 4216/191 | 22 | 0.000% 0xc05041ca | 3524/44 | 3520/44 | 80 | 0.114% 0xc0734fa3 | 2104/701 | 1620/540 | 3 | 23.004% 0xc05ec9f1 | 2024/289 | 2016/288 | 7 | 0.395% 0xc06a1999 | 1792/256 | 1792/256 | 7 | 0.000% 0xc0463b9a | 1584/144 | 1584/144 | 11 | 0.000% 0xc0541eb0 | 1024/16 | 1024/16 | 64 | 0.000% 0xc06a19ac | 896/128 | 896/128 | 7 | 0.000% 0xc05721c0 | 772/12 | 768/12 | 64 | 0.518% 0xc054d1e6 | 288/57 | 280/56 | 5 | 2.778% 0xc04b562e | 157/31 | 154/30 | 5 | 1.911% 0xc04b536f | 80/16 | 80/16 | 5 | 0.000% 0xc05855a0 | 64/64 | 36/36 | 1 | 43.750% ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Alloc Ptr | Total_alloc/Per | Total_req/Per | Hit | Fragmentation ------------------------------------------------------------------------------ 0xda884000 | 1052672/4096 | 1052672/4096 | 257 | 0.000% 0xda886000 | 262144/4096 | 262144/4096 | 64 | 0.000% 0xf60c7c00 | 16512/128 | 16512/128 | 129 | 0.000% 0xf59a4118 | 13120/40 | 13120/40 | 328 | 0.000% 0xdfd4b2c0 | 11264/88 | 11264/88 | 128 | 0.000% 0xf5274600 | 7680/256 | 7680/256 | 30 | 0.000% 0xe8395000 | 5948/594 | 5464/546 | 10 | 8.137% 0xe59c3c00 | 5748/479 | 5712/476 | 12 | 0.626% 0xf4cd1a80 | 3524/44 | 3520/44 | 80 | 0.114% 0xe5bd1600 | 2892/482 | 2856/476 | 6 | 1.245% ... | ... | ... | ... | ... ------------------------------------------------------------------------------ SUMMARY ======= Total bytes requested: 2333626 Total bytes allocated: 2353712 Total bytes wasted on internal fragmentation: 20086 Internal fragmentation: 0.853375% TODO: - show sym+offset in 'callsite' column - show cross node allocation stats - collect more useful stats? - ... Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: linux-mm@kvack.org <linux-mm@kvack.org> LKML-Reference: <4B064AF5.9060208@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-11-20 09:51:41 +01:00
..
bench	perf bench: Improve sched-message.c with more comfortable output	2009-11-10 19:56:46 +01:00
Documentation	Merge branch 'perf/core' into perf/probes	2009-11-17 10:17:47 +01:00
util	perf tools: Don't die() in mmap_dispatch_perf_file	2009-11-19 18:47:18 +01:00
.gitignore	perf tools: .gitignore += perf*.html	2009-09-24 14:01:22 +02:00
builtin-annotate.c	perf tools: Simplify the symbol priv area mechanism	2009-11-02 16:52:11 +01:00
builtin-bench.c	perf bench: Improve builtin-bench.c for more friendly output	2009-11-10 19:56:44 +01:00
builtin-buildid-list.c	perf buildid-list: Always show the DSO name	2009-11-17 07:19:54 +01:00
builtin-help.c	perf: Clean up trivial style issues in builtin-help.c	2009-11-03 18:37:29 +01:00
builtin-kmem.c	perf: Add 'perf kmem' tool	2009-11-20 09:51:41 +01:00
builtin-list.c	perf list: Fix large list output by using the pager	2009-08-13 09:05:48 +02:00
builtin-probe.c	perf/probes: Rename perf probe events group name	2009-11-04 13:02:47 +01:00
builtin-record.c	perf tools: Eliminate some more die() uses in library functions	2009-11-19 18:47:17 +01:00
builtin-report.c	perf tools: Simplify the symbol priv area mechanism	2009-11-02 16:52:11 +01:00
builtin-sched.c	perf tools: Simplify the symbol priv area mechanism	2009-11-02 16:52:11 +01:00
builtin-stat.c	perf stat: Do not print ratio when task-clock event is not counted	2009-11-15 15:25:50 +01:00
builtin-timechart.c	perf tools: perf_header__read() shouldn't die()	2009-11-19 18:47:17 +01:00
builtin-top.c	perf symbols: Capture the running kernel buildid too	2009-11-19 08:28:13 +01:00
builtin-trace.c	perf tools: Simplify the symbol priv area mechanism	2009-11-02 16:52:11 +01:00
builtin.h	perf: Add 'perf kmem' tool	2009-11-20 09:51:41 +01:00
command-list.txt	Merge branch 'perf/core' into perf/probes	2009-11-17 10:17:47 +01:00
CREDITS	perf_counter tools: Add CREDITS file for Git contributors	2009-06-24 19:54:29 +02:00
design.txt	perf_event: Add alignment-faults and emulation-faults software events	2009-10-28 16:13:03 +11:00
Makefile	perf: Add 'perf kmem' tool	2009-11-20 09:51:41 +01:00
perf.c	perf: Add 'perf kmem' tool	2009-11-20 09:51:41 +01:00
perf.h	perf tools: Add ia64 support for tools/perf/	2009-11-19 06:03:33 +01:00