Date: Tue, 22 Feb 2005 13:59:15 -0500
From: Martin Hicks <mort@wildopensource.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Paul Jackson <pj@sgi.com>, mingo@elte.hu, raybry@sgi.com,
       linux-kernel@vger.kernel.org, hilgeman@sgi.com
Subject: Re: [PATCH/RFC] A method for clearing out page cache
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On Tue, Feb 22, 2005 at 10:45:35AM -0800, Andrew Morton wrote:
> Paul Jackson <pj@sgi.com> wrote:
> >
> >  As Martin wrote, when he submitted this patch:
> >  > The motivation for this patch is for setting up High Performance
> >  > Computing jobs, where initial memory placement is very important to
> >  > overall performance.
> > 
> >  Any left over cache is wrong, for this situation.
> 
> So...  Cannot the applicaiton remove all its pagecache with posix_fadvise()
> prior to exitting?

I think Paul's referring to pagecache (as well as other caches) that are
on the node from other uses, not necessarily another HPC job that has
recently terminated.

mh

-- 
Martin Hicks   ||   Silicon Graphics Inc.   ||   mort@sgi.com
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