Andi Kleen 55a4de94c6 perf stat: Add --quiet option ... Add a new --quiet option to 'perf stat'. This is useful with 'perf stat record' to write the data only to the perf.data file, which can lower measurement overhead because the data doesn't need to be formatted. On my 4C desktop: % time ./perf stat record -e $(python -c 'print ",".join(["cycles"]*1000)') -a -I 1000 sleep 5 ... real 0m5.377s user 0m0.238s sys 0m0.452s % time ./perf stat record --quiet -e $(python -c 'print ",".join(["cycles"]*1000)') -a -I 1000 sleep 5 real 0m5.452s user 0m0.183s sys 0m0.423s In this example it cuts the user time by 20%. On systems with more cores the savings are higher. Signed-off-by: Andi Kleen <andi@firstfloor.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Link: http://lore.kernel.org/lkml/20201027002737.30942-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>		2020-11-04 09:42:41 -03:00
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Build.txt	perf tools: Add doc about how to build perf with Asan and UBSan	2019-03-19 16:52:04 -03:00
Makefile	perf doc: allow ASCIIDOC_EXTRA to be an argument	2020-04-18 09:05:00 -03:00
android.txt	perf tools: Update android build documentation	2016-07-04 20:27:27 -03:00
asciidoc.conf	perf docs: Allow man page date to be specified	2019-09-27 09:26:14 -03:00
asciidoctor-extensions.rb	perf Documentation: Support for asciidoctor	2018-04-26 13:47:10 -03:00
build-xed.txt	perf script: Add --insn-trace for instruction decoding	2018-10-24 15:29:50 -03:00
callchain-overhead-calculation.txt	perf tools: Document --children option in more detail	2015-04-29 10:38:06 -03:00
db-export.txt	perf db-export: Add brief documentation	2019-06-05 09:47:57 -03:00
examples.txt	perf record: Remove -f/--force option	2013-07-08 17:37:25 -03:00
intel-bts.txt	perf tools: Add Intel BTS support	2015-08-21 11:34:10 -03:00
intel-pt.txt	perf intel-pt: Update intel-pt.txt file with new location of the documentation	2020-03-11 11:00:33 -03:00
itrace.txt	perf auxtrace: Add itrace 'q' option for quicker, less detailed decoding	2020-08-06 08:24:03 -03:00
jit-interface.txt	perf symbols: Add description of JIT interface	2012-08-13 14:55:02 -03:00
jitdump-specification.txt	perf docs: Correct and clarify jitdump spec	2019-09-30 17:29:51 -03:00
manpage-1.72.xsl	…
manpage-base.xsl	…
manpage-bold-literal.xsl	…
manpage-normal.xsl	…
manpage-suppress-sp.xsl	…
perf-annotate.txt	perf tools: Support --prefix/--prefix-strip	2020-01-14 12:02:19 -03:00
perf-archive.txt	perf archive: Remove duplicated 'runs' in man page	2013-12-09 15:21:45 -03:00
perf-bench.txt	perf bench: Add basic syscall benchmark	2020-07-28 08:50:48 -03:00
perf-buildid-cache.txt	perf buildid-cache: Support --purge-all option	2018-04-26 09:30:26 -03:00
perf-buildid-list.txt	perf report: Accept fifos as input file	2011-12-23 17:01:03 -02:00
perf-c2c.txt	perf c2c: Update documentation for metrics reorganization	2020-10-15 12:02:12 -03:00
perf-config.txt	perf annotate: Allow configuring the 'disassembler_style' knob via 'perf config'	2020-09-04 16:07:23 -03:00
perf-data.txt	perf data: Add support to store time of day in CTF data conversion	2020-08-06 09:43:37 -03:00
perf-diff.txt	perf diff: Support hot streams comparison	2020-10-14 13:34:48 -03:00
perf-evlist.txt	perf evlist: Document missing --force option	2017-11-16 14:50:07 -03:00
perf-ftrace.txt	perf: ftrace: Add filter support for option -F/--funcs	2020-09-04 16:11:16 -03:00
perf-help.txt	…
perf-inject.txt	perf inject: Add --buildid-all option	2020-10-13 11:01:42 -03:00
perf-intel-pt.txt	perf intel-pt: Improve PT documentation slightly	2020-10-14 13:14:40 -03:00
perf-kallsyms.txt	perf tools: Correct title markers for asciidoctor	2018-03-07 10:26:32 -03:00
perf-kmem.txt	perf kmem: Document a missing option & an argument	2018-02-16 14:55:42 -03:00
perf-kvm.txt	perf kvm: Clarify the 'perf kvm' -i and -o command line options	2019-12-02 15:38:59 -03:00
perf-list.txt	perf tools: Add support for exclusive groups/events	2020-10-14 12:24:28 -03:00
perf-lock.txt	perf lock: Document missing options	2017-11-16 14:50:04 -03:00
perf-mem.txt	perf mem/c2c: Fix perf_mem_events to support powerpc	2019-02-04 11:32:14 -03:00
perf-probe.txt	perf-probe: Add user memory access attribute support	2019-05-25 23:04:42 -04:00
perf-record.txt	perf record: Add 'snapshot' control command	2020-09-04 14:38:15 -03:00
perf-report.txt	perf report: Add option to enable the LBR stitching approach	2020-04-18 09:05:01 -03:00
perf-sched.txt	perf sched timehist: Add support for filtering on CPU	2020-01-06 11:46:09 -03:00
perf-script-perl.txt	perf tools: Correct title markers for asciidoctor	2018-03-07 10:26:32 -03:00
perf-script-python.txt	perf script python: Add dict fields introduction to Documentation	2018-06-06 15:40:10 -03:00
perf-script.txt	perf script: Add option --show-text-poke-events	2020-07-10 08:31:45 -03:00
perf-stat.txt	perf stat: Add --quiet option	2020-11-04 09:42:41 -03:00
perf-test.txt	perf test: Add -F/--dont-fork option	2016-06-30 18:27:45 -03:00
perf-timechart.txt	perf timechart: Document missing --force option	2017-11-16 14:50:06 -03:00
perf-top.txt	perf tools: Add optional support for libpfm4	2020-05-29 16:51:38 -03:00
perf-trace.txt	perf trace: Introduce --errno-summary	2019-10-15 13:03:49 -03:00
perf-version.txt	perf version: Add man page	2018-04-02 13:52:23 -03:00
perf.data-directory-format.txt	perf record: Put a copy of kcore into the perf.data directory	2019-11-06 15:43:05 -03:00
perf.data-file-format.txt	perf header: Store clock references for -k/--clockid option	2020-08-06 09:35:06 -03:00
perf.txt	perf docs: Improve help information in perf.txt	2020-09-17 16:03:31 -03:00
perfconfig.example	perf config: Show default report configuration in example and docs	2016-09-01 09:44:13 -03:00
security.txt	perf docs: Introduce security.txt file to document related issues	2020-05-28 10:03:26 -03:00
tips.txt	perf tools: Fix typos / broken sentences	2019-07-02 16:08:16 -03:00
topdown.txt	perf tools: Add documentation for topdown metrics	2020-09-17 15:48:31 -03:00