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Date: Tue, 14 Aug 2007 22:38:07 +0800
From: Eugene Teo <eugeneteo@kernel.sg>
To: Helge Hafting <helge.hafting@aitel.hist.no>
Cc: Adnan Khaleel <akhaleel2001@yahoo.com>, linux-kernel@vger.kernel.org
Subject: Re: Page Cache Question
Message-ID: <20070814143807.GA23257@kernel.sg>
Reply-To: Eugene Teo <eugeneteo@kernel.sg>
References: <725937.57185.qm@web33705.mail.mud.yahoo.com> <46C18068.7020602@aitel.hist.no>
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<quote sender="Helge Hafting">
> Adnan Khaleel wrote:
>> I'm looking for a way to disable the page cache for an
>> experimental NUMA system running the 2.6.17 kernel. I would prefer to
>> only disable the page cache for my process and still have it be enabled
>> by the rest of the system. Is there an easy way of doing this?
>> Alternatively, I would be fine disabling the Page Cache altogether as 
>> well.
>>   
> Assuming what you really mean is that you don't want to cache
> file i/o for that process - try opening files with O_DIRECT.

You will probably find this tool useful:
http://userweb.kernel.org/~akpm/pagecache-management/

"... a little tool which permits the management of the pagecache usage of
arbitrary applications.  Effectively it prevents the targetted application
from using any pagecache at all."

Eugene
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