From: Andi Kleen <ak@linux.intel.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: kan.liang@intel.com, jolsa@redhat.com, namhyung@kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V7 1/1] perf tool:perf diff support for different binaries
Date: Thu, 26 Feb 2015 12:34:04 -0800 [thread overview]
Message-ID: <20150226203404.GF27767@tassilo.jf.intel.com> (raw)
In-Reply-To: <20150226151751.GD13373@kernel.org>
> Having a nice explanation of the problem helps, as my first reaction to
> this patch was: "What? This is what this tool is supposed to do, to
> compare two versions of a binary, one that is being developed from the
> same source, the other with slight modifications, etc", while the
> description of the patch made it look as this was a feature that was now
> being introduced.
AFAIK it was actually to compare multiple runs of the same binary
with different setups: e.g. varying number of threads.
However in the Linux kernel development world it turns out comparing
multiple similar binaries is much more useful.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2015-02-26 20:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-09 5:39 [PATCH V7 1/1] perf tool:perf diff support for different binaries kan.liang
2015-02-25 15:14 ` Liang, Kan
2015-02-25 15:30 ` acme
2015-02-26 15:17 ` Arnaldo Carvalho de Melo
2015-02-26 20:34 ` Andi Kleen [this message]
2015-02-26 20:44 ` Arnaldo Carvalho de Melo
2015-02-26 22:49 ` Andi Kleen
2015-02-28 9:32 ` [tip:perf/core] perf diff: Support " tip-bot for Kan Liang
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=20150226203404.GF27767@tassilo.jf.intel.com \
--to=ak@linux.intel.com \
--cc=acme@kernel.org \
--cc=jolsa@redhat.com \
--cc=kan.liang@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=namhyung@kernel.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