From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org,
Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Andi Kleen <ak@linux.intel.com>, Jiri Olsa <jolsa@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Stephane Eranian <eranian@google.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 09/11] perf stat: Correct --no-aggr description
Date: Mon, 20 Mar 2017 22:16:39 -0300 [thread overview]
Message-ID: <20170321011641.25763-10-acme@kernel.org> (raw)
In-Reply-To: <20170321011641.25763-1-acme@kernel.org>
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Description of --no-aggr in perf-stat man page is outdated.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
next prev parent reply other threads:[~2017-03-21 1:19 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-21 1:16 [GIT PULL 00/11] perf/core improvements and fixes Arnaldo Carvalho de Melo
2017-03-21 1:16 ` Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 01/11] perf lock: Subcommands should include common options Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 02/11] perf lock: Make 'f' part of the common 'lock_options' Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 03/11] perf timechart: Use OPT_PARENT for common options Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 04/11] tools lib api fs: Introduce sysfs__read_bool Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 05/11] tools include: Sync {,tools/}include/uapi/linux/perf_event.h Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 06/11] perf tools: Handle partial AUX records and print a warning Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 07/11] tools headers: Sync {tools/,}arch/x86/include/asm/cpufeatures.h Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 08/11] tools headers: Sync {tools/,}arch/arm{64}/include/uapi/asm/kvm.h Arnaldo Carvalho de Melo
2017-03-21 1:16 ` Arnaldo Carvalho de Melo [this message]
2017-03-21 1:16 ` [PATCH 10/11] perf probe: Fix concat_probe_trace_events Arnaldo Carvalho de Melo
2017-03-21 1:16 ` [PATCH 11/11] tools headers: Sync {tools/,}arch/powerpc/include/uapi/asm/kvm.h Arnaldo Carvalho de Melo
2017-03-21 6:43 ` [GIT PULL 00/11] perf/core improvements and fixes Ingo Molnar
2017-03-21 6:43 ` Ingo Molnar
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