Namhyung Kim 0d68bc92c4 perf kmem: Analyze page allocator events also ... The perf kmem command records and analyze kernel memory allocation only for SLAB objects. This patch implement a simple page allocator analyzer using kmem:mm_page_alloc and kmem:mm_page_free events. It adds two new options of --slab and --page. The --slab option is for analyzing SLAB allocator and that's what perf kmem currently does. The new --page option enables page allocator events and analyze kernel memory usage in page unit. Currently, 'stat --alloc' subcommand is implemented only. If none of these --slab nor --page is specified, --slab is implied. First run 'perf kmem record' to generate a suitable perf.data file: # perf kmem record --page sleep 5 Then run 'perf kmem stat' to postprocess the perf.data file: # perf kmem stat --page --alloc --line 10 ------------------------------------------------------------------------------- PFN | Total alloc (KB) | Hits | Order | Mig.type | GFP flags ------------------------------------------------------------------------------- 4045014 | 16 | 1 | 2 | RECLAIM | 00285250 4143980 | 16 | 1 | 2 | RECLAIM | 00285250 3938658 | 16 | 1 | 2 | RECLAIM | 00285250 4045400 | 16 | 1 | 2 | RECLAIM | 00285250 3568708 | 16 | 1 | 2 | RECLAIM | 00285250 3729824 | 16 | 1 | 2 | RECLAIM | 00285250 3657210 | 16 | 1 | 2 | RECLAIM | 00285250 4120750 | 16 | 1 | 2 | RECLAIM | 00285250 3678850 | 16 | 1 | 2 | RECLAIM | 00285250 3693874 | 16 | 1 | 2 | RECLAIM | 00285250 ... | ... | ... | ... | ... | ... ------------------------------------------------------------------------------- SUMMARY (page allocator) ======================== Total allocation requests : 44,260 [ 177,256 KB ] Total free requests : 117 [ 468 KB ] Total alloc+freed requests : 49 [ 196 KB ] Total alloc-only requests : 44,211 [ 177,060 KB ] Total free-only requests : 68 [ 272 KB ] Total allocation failures : 0 [ 0 KB ] Order Unmovable Reclaimable Movable Reserved CMA/Isolated ----- ------------ ------------ ------------ ------------ ------------ 0 32 . 44,210 . . 1 . . . . . 2 . 18 . . . 3 . . . . . 4 . . . . . 5 . . . . . 6 . . . . . 7 . . . . . 8 . . . . . 9 . . . . . 10 . . . . . Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/1428298576-9785-4-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2015-04-13 11:44:52 -03:00
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Build.txt	perf build: Add build documentation	2015-02-12 17:53:00 -03:00
Makefile	…
android.txt	…
asciidoc.conf	…
examples.txt	…
jit-interface.txt	…
manpage-1.72.xsl	…
manpage-base.xsl	…
manpage-bold-literal.xsl	…
manpage-normal.xsl	…
manpage-suppress-sp.xsl	…
perf-annotate.txt	…
perf-archive.txt	…
perf-bench.txt	…
perf-buildid-cache.txt	perf buildid-cache: Add --purge FILE to remove all caches of FILE	2015-02-27 15:52:33 -03:00
perf-buildid-list.txt	…
perf-data.txt	perf data: Add perf data to CTF conversion support	2015-02-25 16:13:12 -03:00
perf-diff.txt	perf diff: Add kallsyms option	2015-03-24 13:01:54 -03:00
perf-evlist.txt	…
perf-help.txt	…
perf-inject.txt	…
perf-kmem.txt	perf kmem: Analyze page allocator events also	2015-04-13 11:44:52 -03:00
perf-kvm.txt	perf Documentation: Fix typos in perf/Documentation	2014-10-15 17:39:02 -03:00
perf-list.txt	perf tools: Add 'I' event modifier for exclude_idle bit	2015-04-08 11:00:16 -03:00
perf-lock.txt	…
perf-mem.txt	perf mem: Enable sampling loads and stores simultaneously	2015-01-21 13:24:31 -03:00
perf-probe.txt	perf probe: Update man page	2015-02-06 11:46:36 +01:00
perf-record.txt	perf record: Add clockid parameter	2015-04-08 10:04:55 -03:00
perf-report.txt	perf tools: Add pid/tid filtering to report and script commands	2015-03-24 13:02:46 -03:00
perf-sched.txt	…
perf-script-perl.txt	perf Documentation: Fix typos in perf/Documentation	2014-10-15 17:39:02 -03:00
perf-script-python.txt	perf Documentation: Fix typos in perf/Documentation	2014-10-15 17:39:02 -03:00
perf-script.txt	perf tools: Add pid/tid filtering to report and script commands	2015-03-24 13:02:46 -03:00
perf-stat.txt	perf tools: Document parameterized and symbolic events	2015-01-21 13:24:33 -03:00
perf-test.txt	perf Documentation: Fix typos in perf/Documentation	2014-10-15 17:39:02 -03:00
perf-timechart.txt	…
perf-top.txt	…
perf-trace.txt	perf trace: Add man page entry for --event	2015-02-22 22:22:07 -03:00
perf.txt	perf data: Add perf data to CTF conversion support	2015-02-25 16:13:12 -03:00
perfconfig.example	…