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linux-stable/tools/perf
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Alexey Budankov 9dc9a95f03 perf stat: Enable 1ms interval for printing event counters values 
Currently print count interval for performance counters values is
limited by 10ms so reading the values at frequencies higher than 100Hz
is restricted by the tool.

This change makes perf stat -I possible on frequencies up to 1KHz and,
to some extent, makes perf stat -I to be on-par with perf record
sampling profiling.

When running perf stat -I for monitoring e.g. PCIe uncore counters and
at the same time profiling some I/O workload by perf record e.g. for
cpu-cycles and context switches, it is then possible to observe
consolidated CPU/OS/IO(Uncore) performance picture for that workload.

Tool overhead warning printed when specifying -v option can be missed
due to screen scrolling in case you have output to the console
so message is moved into help available by running perf stat -h.

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/b842ad6a-d606-32e4-afe5-974071b5198e@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2018-04-12 09:29:31 -03:00
..
arch perf annotate: Pass function descriptor to its instruction parsing routines 2018-03-21 16:19:41 -03:00
bench perf perf: Remove duplicate includes 2017-12-27 12:15:49 -03:00
Documentation perf stat: Enable 1ms interval for printing event counters values 2018-04-12 09:29:31 -03:00
jvmti perf jvmti: Generate correct debug information for inlined code 2017-12-18 11:54:08 -03:00
pmu-events perf vendor events s390: Add JSON files for IBM z14 2018-03-27 13:13:39 -03:00
python perf python: Make twatch.py work with both python2 and python3 2018-02-19 12:28:08 -03:00
scripts perf tools: Add Python 3 support 2018-02-19 12:28:23 -03:00
tests perf tests bp_account: Fix build with clang-6 2018-03-19 13:51:54 -03:00
trace perf trace beauty flock: Move to separate object file 2018-01-25 06:37:31 -03:00
ui perf hists browser: Remove leftover from row returned from refresh 2018-04-06 12:23:25 -03:00
util perf tests clang: Fix function name for clang IR test 2018-04-09 11:13:09 -03:00
.gitignore perf tools: Add trace/beauty/generated/ into .gitignore 2018-02-05 13:58:02 -03:00
Build perf trace: Remove audit-libs dependency if syscall tables are present 2018-01-23 09:51:38 -03:00
builtin-annotate.c perf annotate: Introduce --ignore-vmlinux command line option 2018-03-21 12:53:42 -03:00
builtin-bench.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
builtin-buildid-cache.c perf buildid-cache: Update help text for purge command 2017-11-16 14:49:54 -03:00
builtin-buildid-list.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-c2c.c perf c2c report: Add cacheline address count column 2018-03-16 13:53:38 -03:00
builtin-config.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-data.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
builtin-diff.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-evlist.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-ftrace.c perf ftrace: Append an EOL when write tracing files 2018-02-19 09:49:12 -03:00
builtin-help.c perf trace: Remove audit-libs dependency if syscall tables are present 2018-01-23 09:51:38 -03:00
builtin-inject.c perf tools: Get rid of unused 'swapped' parameter from perf_event__synthesize_sample() 2018-01-18 09:01:23 -03:00
builtin-kallsyms.c
builtin-kmem.c mm: remove __GFP_COLD 2017-11-15 18:21:06 -08:00
builtin-kvm.c perf mmap: Simplify perf_mmap__read_init() 2018-03-08 10:05:53 -03:00
builtin-list.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-lock.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-mem.c Merge branch 'linus' into perf/core, to fix conflicts 2017-11-07 10:30:18 +01:00
builtin-probe.c
builtin-record.c perf record: Synthesize features before events in pipe mode 2018-03-16 13:56:50 -03:00
builtin-report.c perf report: Introduce --ignore-vmlinux command line option 2018-03-21 12:53:42 -03:00
builtin-sched.c perf sched map: Re-annotate shortname if thread comm changed 2018-03-07 10:22:26 -03:00
builtin-script.c perf tools: Fix snprint warnings for gcc 8 2018-03-19 10:00:43 -03:00
builtin-stat.c perf stat: Enable 1ms interval for printing event counters values 2018-04-12 09:29:31 -03:00
builtin-timechart.c perf tools: Add struct perf_data_file 2017-10-30 13:37:37 -03:00
builtin-top.c perf annotate: Move the default annotate options to the library 2018-03-21 12:53:40 -03:00
builtin-trace.c perf trace: Remove redundant ')' 2018-04-03 16:16:41 -03:00
builtin-version.c perf version: Print the compiled-in status of libraries 2018-04-02 13:50:30 -03:00
builtin.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
check-headers.sh perf build: Fix check-headers.sh opts assignment 2018-03-27 13:13:38 -03:00
command-list.txt
CREDITS
design.txt
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile.config perf config: Rename to HAVE_DWARF_GETLOCATIONS_SUPPORT 2018-04-02 13:50:24 -03:00
Makefile.perf perf tools: Fix perf builds with clang support 2018-04-09 11:13:07 -03:00
MANIFEST perf tools: Get all of tools/{arch,include}/ in the MANIFEST 2017-09-25 10:39:43 -03:00
perf-archive.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf-completion.sh perf tools: Auto-complete for events with ':' 2017-12-27 12:16:00 -03:00
perf-read-vdso.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf-sys.h Drop a bunch of metag references 2018-02-23 14:29:59 +00:00
perf-with-kcore.sh
perf.c perf tools: Add 'perf -vv' as an alias to 'perf version --build-options' 2018-04-02 13:50:35 -03:00
perf.h perf tools: Add 'perf -vv' as an alias to 'perf version --build-options' 2018-04-02 13:50:35 -03:00