From: Andi Kleen <ak@linux.intel.com>
To: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@redhat.com>
Subject: Re: [PATCH] tools, perf: Allow the user to disable time stamps
Date: Tue, 25 Mar 2014 14:06:50 -0700 [thread overview]
Message-ID: <20140325210650.GI15074@tassilo.jf.intel.com> (raw)
In-Reply-To: <CABPqkBSpoc1LX3=hZTnwM9KAeu943kbS0UgCbupWJf1idtdWNg@mail.gmail.com>
Also here's updated data with ls -lh. 24% saving here.
The perf output is actually not that inaccurate
for this case.
% perf record --no-time -c 100003 -p 10247 sleep 1
% ls -lh perf.data
-rw------- 1 ak users 681K Mar 25 14:04 perf.data
% perf record -c 100003 -p 10247 sleep 1
[ perf record: Woken up 4 times to write data ]
[ perf record: Captured and wrote 0.869 MB perf.data (~37982 samples) ]
% ls -lh perf.data
-rw------- 1 ak users 893K Mar 25 14:04 perf.data
-Andi
next prev parent reply other threads:[~2014-03-25 21:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-25 20:44 [PATCH] tools, perf: Allow the user to disable time stamps Andi Kleen
2014-03-25 20:54 ` Stephane Eranian
2014-03-25 21:01 ` Andi Kleen
2014-03-25 22:15 ` Stephane Eranian
2014-03-25 22:34 ` Andi Kleen
2014-03-25 21:06 ` Andi Kleen [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-03-25 20:34 Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140325210650.GI15074@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=acme@infradead.org \
--cc=andi@firstfloor.org \
--cc=eranian@google.com \
--cc=jolsa@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=namhyung@kernel.org \
--cc=peterz@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox