From: Jiri Olsa <jolsa@redhat.com>
To: Jeff Johnson <jerojohn@ucsc.edu>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: perf not measuring LLC events?
Date: Mon, 21 Jan 2013 15:38:16 +0100 [thread overview]
Message-ID: <20130121143816.GE1995@krava.brq.redhat.com> (raw)
In-Reply-To: <loom.20130118T172647-728@post.gmane.org>
On Fri, Jan 18, 2013 at 04:28:51PM +0000, Jeff Johnson wrote:
> Dervin Thunk <dervin.thunk <at> gmail.com> writes:
>
> >
> > Dear all,
> >
> > I'm trying to measure the LLC events of a program. I'm running
> > linux-tools-3.2.0- 34 on a fairly recent 4 core Intel machine. For a
> > certain program that reads a 64 MB file into memory, I get
> >
> > Performance counter stats for './algo data/E.dna':
> >
> > 0 LLC-loads
> > 0 LLC-load-misses
>
>
> Dervin,
> I am experiencing the same issue. I am running perf on an i5 machine. Have you
> gotten any feedback regarding this?
I'm getting some 'sane' numbers on 2 cores i7 SandyBridge on 3.6.11-1.fc17.x86_64
not sure if this was broken back in 3.2.0
please be more specific on what system you're testing on
and provide whole perf stat command line
jirka
next prev parent reply other threads:[~2013-01-21 14:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-15 18:26 perf not measuring LLC events? Dervin Thunk
2013-01-18 16:28 ` Jeff Johnson
2013-01-21 14:38 ` Jiri Olsa [this message]
2013-01-21 16:10 ` Jeff
2013-01-22 15:06 ` Jiri Olsa
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