From: Andi Kleen <andi@firstfloor.org>
To: "Kevin Burton" <burton@tailrank.com>
Cc: "FD Cami" <francois.cami@free.fr>, linux-kernel@vger.kernel.org
Subject: Re: Ability to limit or disable page caching?
Date: Mon, 05 May 2008 22:10:40 +0200 [thread overview]
Message-ID: <878wyocy0v.fsf@basil.nowhere.org> (raw)
In-Reply-To: <30c6373b0805051242o2f38f0a3v62bd43f4fa01559e@mail.gmail.com> (Kevin Burton's message of "Mon, 5 May 2008 12:42:31 -0700")
"Kevin Burton" <burton@tailrank.com> writes:
>
> What I want to do is either disable the page cache entirely or just
> tell the OS to cache at max 10% of the available memory.
FYI page cache includes the memory your program uses. No page
cache would mean no user space, 10% would mean user space uses only
10%. One way that would fulfil your request literally is to boot with
mem=<10% of your ram>, but I guess you don't really want that.
If you don't want your application to be swapped at all you
should probably investigate mlock(2)/mlockall(2)
-Andi
next prev parent reply other threads:[~2008-05-05 20:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-05 7:12 Ability to limit or disable page caching? Kevin Burton
2008-05-05 11:16 ` FD Cami
2008-05-05 18:34 ` Kevin Burton
2008-05-05 19:28 ` FD Cami
2008-05-05 19:42 ` Kevin Burton
2008-05-05 20:10 ` Andi Kleen [this message]
2008-05-05 20:28 ` Kevin Burton
2008-05-05 20:31 ` Kevin Burton
2008-05-05 20:40 ` Kevin Burton
2008-05-06 0:23 ` Andi Kleen
2008-05-06 0:30 ` Kevin Burton
2008-05-05 21:24 ` Bernd Eckenfels
2008-05-05 20:44 ` Rik van Riel
2008-05-05 21:00 ` Kevin Burton
2008-05-05 22:08 ` Rik van Riel
2008-05-05 22:15 ` Kevin Burton
2008-05-08 2:08 ` split LRU kernel RPM Rik van Riel
2008-05-05 21:03 ` Ability to limit or disable page caching? Chris Friesen
2008-05-05 21:32 ` Kevin Burton
2008-05-05 22:06 ` Rik van Riel
2008-05-06 11:02 ` Tomasz Kłoczko
2008-05-05 19:33 ` Kevin Burton
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