From: Andi Kleen <ak@suse.de>
To: Suresh Duddi <dp@netscape.com>
Cc: linux-mm@kvack.org
Subject: Re: .Help with measuring working-set
Date: Wed, 6 Feb 2002 10:03:44 +0100 [thread overview]
Message-ID: <20020206100344.A28700@wotan.suse.de> (raw)
In-Reply-To: <3C5F418C.6030808@netscape.com>
On Mon, Feb 04, 2002 at 06:21:00PM -0800, Suresh Duddi wrote:
> hi, I am developer of Mozilla (open source web browser from mozilla.org)
> We are trying to make footprint improvements to the browser and have
> settled on minimizing working set and max-vm-usage as our goals.
>
> http://www.mozilla.org/projects/footprint/footprint-guide.html
>
> One thing we are struggling with is measurement of working set of app
> during a time interval.
The only metric the kernel supports for the working set currently is a
single RSS integer telling you have many pages are currently mapped into
a process. There may be more pages from your process unmapped in RAM,
but being unmapped is usually the first step to swap the page out or
throw it away.
> Any pointers ? Are the metrics the best ones to measure and optimize ?
I guess you would prefer to know which pages are mapped at a given
point. This would require some custom patching to add a trace facility
for that. Shouldn't be that hard to implement, but I don't know of a
ready patch.
-Andi
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next prev parent reply other threads:[~2002-02-06 9:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-05 2:21 Suresh Duddi
2002-02-06 9:03 ` Andi Kleen [this message]
2002-02-06 9:58 ` bert hubert
2002-02-06 12:25 ` Rik van Riel
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