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[PATCH 09/11] perf stat: Correct --no-aggr description

From Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups linux.kernel
Subject [PATCH 09/11] perf stat: Correct --no-aggr description
Date 2017-03-21 02:30 +0100
Message-ID <tngMx-4Et-13@gated-at.bofh.it> (permalink)
References <tngCR-4AF-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>

Description of --no-aggr in perf-stat man page is outdated. --no-aggr
can also be used while profiling specific set of cpus. For ex,

  $ perf stat -e cycles,instructions -C 1-2 --no-aggr -- sleep 1

    Performance counter stats for 'CPU(s) 1-2':

    CPU1   5,94,92,795   cycles
    CPU2   2,69,72,403   cycles
    CPU1   2,02,08,327   instructions   # 0.34 insn per cycle
    CPU2     73,17,123   instructions   # 0.12 insn per cycle

    1.000989132 seconds time elapsed

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1490013438-5713-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/perf-stat.txt | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
index aecf2a87e7d6..978548138624 100644
--- a/tools/perf/Documentation/perf-stat.txt
+++ b/tools/perf/Documentation/perf-stat.txt
@@ -94,8 +94,7 @@ to activate system-wide monitoring. Default is to count on all CPUs.
 
 -A::
 --no-aggr::
-Do not aggregate counts across all monitored CPUs in system-wide mode (-a).
-This option is only valid in system-wide mode.
+Do not aggregate counts across all monitored CPUs.
 
 -n::
 --null::
-- 
2.9.3

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Thread

[GIT PULL 00/11] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-21 02:20 +0100
  [PATCH 01/11] perf lock: Subcommands should include common options Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-21 02:20 +0100
  [PATCH 10/11] perf probe: Fix concat_probe_trace_events Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-21 02:30 +0100
  [PATCH 05/11] tools include: Sync {,tools/}include/uapi/linux/perf_event.h Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-21 02:30 +0100
  [PATCH 09/11] perf stat: Correct --no-aggr description Arnaldo Carvalho de Melo <acme@kernel.org> - 2017-03-21 02:30 +0100
  Re: [GIT PULL 00/11] perf/core improvements and fixes Ingo Molnar <mingo@kernel.org> - 2017-03-21 07:50 +0100

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