Don Zickus 363b785f38 perf tools: Speed up thread map generation ... When trying to capture perf data on a system running spejbb2013, perf hung for about 15 minutes. This is because it took that long to gather about 10,000 thread maps and process them. I don't think a user wants to wait that long. Instead, recognize that thread maps are roughly equivalent to pid maps and just quickly copy those instead. To do this, I synthesize 'fork' events, this eventually calls thread__fork() and copies the maps over. The overhead goes from 15 minutes down to about a few seconds. -- V2: based on Jiri's comments, moved malloc up a level and made sure the memory was freed Signed-off-by: Don Zickus <dzickus@redhat.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@redhat.com> Link: http://lkml.kernel.org/r/1394808224-113774-1-git-send-email-dzickus@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2014-03-14 18:08:41 -03:00
..
arch	perf tools: Setup default dwarf post unwinder	2014-02-24 09:29:36 -03:00
bench	perf bench: Add futex-requeue microbenchmark	2014-03-14 11:20:44 -03:00
config	Merge branch 'perf/urgent' into perf/core	2014-03-11 11:53:50 +01:00
Documentation	perf probe: Clarify x86 register naming for perf probe	2014-03-14 11:20:44 -03:00
python	perf python: Remove duplicate TID bit from mask	2013-08-07 17:35:25 -03:00
scripts	perf tools: Finish the removal of 'self' arguments	2013-11-05 15:32:36 -03:00
tests	perf tests: Add NO_LIBDW_DWARF_UNWIND make test	2014-02-24 09:29:37 -03:00
ui	perf ui hists: Pass evsel to hpp->header/width functions explicitly	2014-03-14 18:08:40 -03:00
util	perf tools: Speed up thread map generation	2014-03-14 18:08:41 -03:00
.gitignore	perf tools: Ignore 'perf timechart' output file	2013-10-11 12:17:37 -03:00
builtin-annotate.c	perf evlist: Introduce evlist__for_each() & friends	2014-01-13 10:06:25 -03:00
builtin-bench.c	perf bench: Add futex-requeue microbenchmark	2014-03-14 11:20:44 -03:00
builtin-buildid-cache.c	perf buildid-cache: Check relocation when checking for existing kcore	2014-01-31 17:21:54 -03:00
builtin-buildid-list.c	perf session: Separating data file properties from session	2013-10-21 17:33:25 -03:00
builtin-diff.c	perf ui hists: Pass evsel to hpp->header/width functions explicitly	2014-03-14 18:08:40 -03:00
builtin-evlist.c	perf evlist: Introduce evlist__for_each() & friends	2014-01-13 10:06:25 -03:00
builtin-help.c	perf help: Fix --help for builtins	2012-10-22 12:35:49 -02:00
builtin-inject.c	perf callchain: Add mask into struct regs_dump	2014-02-18 09:34:48 -03:00
builtin-kmem.c	perf evsel: Ditch evsel->handler.data field	2013-11-07 10:40:47 -03:00
builtin-kvm.c	perf kvm: introduce --list-cmds for use by scripts	2014-03-14 18:08:41 -03:00
builtin-list.c	perf list: Add usage	2013-11-05 14:26:41 -03:00
builtin-lock.c	perf evsel: Ditch evsel->handler.data field	2013-11-07 10:40:47 -03:00
builtin-mem.c	perf mem: Remove unused parameter from dump_raw_samples()	2013-12-19 17:03:39 -03:00
builtin-probe.c	perf probe: Replace line_list with intlist	2014-02-18 09:34:50 -03:00
builtin-record.c	perf callchain: Introduce HAVE_DWARF_UNWIND_SUPPORT macro	2014-02-18 09:34:48 -03:00
builtin-report.c	Merge branch 'perf/urgent' into perf/core	2014-03-11 11:53:50 +01:00
builtin-sched.c	perf tools: Use zfree to help detect use after free bugs	2013-12-27 17:08:19 -03:00
builtin-script.c	perf evlist: Introduce evlist__for_each() & friends	2014-01-13 10:06:25 -03:00
builtin-stat.c	perf evlist: Introduce evlist__for_each() & friends	2014-01-13 10:06:25 -03:00
builtin-timechart.c	perf timechart: Fix wrong SVG height	2014-01-20 16:19:08 -03:00
builtin-top.c	Merge branch 'perf/urgent' into perf/core	2014-03-11 11:53:50 +01:00
builtin-trace.c	perf trace: Decode architecture-specific signal numbers	2014-03-10 11:10:45 -03:00
builtin.h	perf tools: Add new mem command for memory access profiling	2013-04-01 12:21:44 -03:00
command-list.txt	perf tools: Add new mem command for memory access profiling	2013-04-01 12:21:44 -03:00
CREDITS
design.txt	perf/doc: Remove mention of non-existent set_perf_event_pending() from design.txt	2014-01-26 09:37:48 +01:00
Makefile	perf tools: Add 'build-test' make target	2014-01-16 16:26:26 -03:00
Makefile.perf	perf bench: Add futex-requeue microbenchmark	2014-03-14 11:20:44 -03:00
MANIFEST	perf tools: Move hash.h header	2014-02-18 09:34:49 -03:00
perf-archive.sh	perf archive: Make 'f' the last parameter for tar	2012-09-17 13:10:42 -03:00
perf-completion.sh	perf kvm: introduce --list-cmds for use by scripts	2014-03-14 18:08:41 -03:00
perf.c	tools/: Convert to new topic libraries	2013-12-16 16:03:27 -03:00
perf.h	perf bench: Add futex-hash microbenchmark	2014-03-14 11:20:43 -03:00