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Open Source and information security mailing list archives
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Message-ID: <87iqzw197h.fsf@basil.nowhere.org> Date: 09 Mar 2008 11:29:54 +0100 From: Andi Kleen <andi@...stfloor.org> To: Thomas Gleixner <tglx@...utronix.de> Cc: LKML <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...e.hu>, Christoph Lameter <clameter@....com>, Bart Van Assche <bart.vanassche@...il.com> Subject: Re: quicklists confuse meminfo Thomas Gleixner <tglx@...utronix.de> writes: > Bart reported http://bugzilla.kernel.org/show_bug.cgi?id=9991. He > assumed a memory leak in 32bit kernels when he analyzed the output of > /proc/meminfo. > > The leak is not a leak, it's an accounting bug. quicklists keep a > large amount of pages which are accounted as used memory. There are various other subsystems which can cache substantial memory under the right circumstances. Do you want to add all of them to /proc/meminfo? I'm not sure that will scale long term. One more general possibility would be to integrate this with with the shrinker callbacks. Everyone who caches memory should have a shrinker. Perhaps that could be integrated with some reporting facility that adds a dynamic counter field that is displayed somewhere in /proc or /sys. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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