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Date:      Thu, 6 May 2010 13:45:12 +0200
From:      Jeremie Le Hen <jeremie@le-hen.org>
To:        David Ehrmann <ehrmann@gmail.com>
Cc:        Attilio Rao <attilio@freebsd.org>, freebsd-current@freebsd.org
Subject:   Re: Strange disk problem
Message-ID:  <20100506114512.GH56740@felucia.tataz.chchile.org>
In-Reply-To: <j2u6e0e5341004200858lc2469893i5e7d824bfcf173e0@mail.gmail.com>
References:  <4BCD5049.8030408@gmail.com> <t2o3bbf2fe11004200529h45cf209et731a194794aae7e1@mail.gmail.com> <j2u6e0e5341004200858lc2469893i5e7d824bfcf173e0@mail.gmail.com>

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Hi David,

On Tue, Apr 20, 2010 at 08:58:49AM -0700, David Ehrmann wrote:
> On Tue, Apr 20, 2010 at 5:29 AM, Attilio Rao <attilio@freebsd.org> wrote:
> >
> >
> > David,
> > do you think you are willing to re-create the problem and do a PMC
> > analysis on it?
> > (If you need any guidance let me know, I will be happy to give it).
> >
> >
> Maybe, but I don't know what PMC analysis is, so a lot of guidance might be
> required.

Quick howto from Robert Watson:
http://lists.freebsd.org/pipermail/freebsd-current/2006-February/061096.html

Other interesting links:
http://people.freebsd.org/~jkoshy/projects/perf-measurement/
http://people.freebsd.org/~jkoshy/download/acm-apr-09.pdf

Regards,
-- 
Jeremie Le Hen

Humans are born free and equal.  But some are more equal than others.
					    Coluche



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