From: Michael Ellerman <michael@ellerman.id.au>
To: HUMMEL Michel <michel.hummel@thalesgroup.com>
Cc: "linux-perf-users@vger.kernel.org" <linux-perf-users@vger.kernel.org>
Subject: Re: Perf 2.6.32-220.el6.x86_64 problem when recording 2 counters
Date: Thu, 24 May 2012 10:33:15 +1000 [thread overview]
Message-ID: <1337819595.29765.9.camel@concordia> (raw)
In-Reply-To: <14480_1337789222_4FBD0B26_14480_3035_2_932AC94CE5A51243A6F091BAFB3EE3E0028AB9506D@THSONEA01CMS01P.one.grp>
On Wed, 2012-05-23 at 18:06 +0200, HUMMEL Michel wrote:
> Hello,
> I am testing the perf command of my new centos 6.2 server, and I don't understand something.
>
> I wrote a simple test case which is calling two functions.
> The first one "good_perfo" does the same as the second "bad_perfo"
> but more efficiently (lesser cache miss ...).
Does it make any difference if you rewrite your test to run bad_perfo
first, and then good_perfo?
cheers
next prev parent reply other threads:[~2012-05-24 0:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-23 16:06 Perf 2.6.32-220.el6.x86_64 problem when recording 2 counters HUMMEL Michel
2012-05-24 0:33 ` Michael Ellerman [this message]
2012-05-24 7:14 ` HUMMEL Michel
2012-05-24 14:57 ` David Ahern
2012-05-24 16:19 ` HUMMEL Michel
2012-05-24 16:27 ` David Ahern
2012-05-24 0:44 ` Namhyung Kim
2012-05-24 7:23 ` HUMMEL Michel
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