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Message-ID: <4A85E722.8030706@redhat.com> Date: Fri, 14 Aug 2009 18:37:22 -0400 From: Rik van Riel <riel@...hat.com> To: "Dike, Jeffrey G" <jeffrey.g.dike@...el.com> CC: "Wu, Fengguang" <fengguang.wu@...el.com>, Johannes Weiner <hannes@...xchg.org>, Avi Kivity <avi@...hat.com>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Andrea Arcangeli <aarcange@...hat.com>, "Yu, Wilfred" <wilfred.yu@...el.com>, "Kleen, Andi" <andi.kleen@...el.com>, Hugh Dickins <hugh.dickins@...cali.co.uk>, Andrew Morton <akpm@...ux-foundation.org>, Christoph Lameter <cl@...ux-foundation.org>, Mel Gorman <mel@....ul.ie>, LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org> Subject: Re: [RFC] respect the referenced bit of KVM guest pages? Dike, Jeffrey G wrote: > A side note - I've been doing some tracing and shrink_active_list is called a humongous number of times (25000-ish during a ~90 kvm run), with a net result of zero pages moved nearly all the time. Your test is rescuing essentially all candidate pages from the inactive list. Right now, I have the VM_EXEC || PageAnon version of your test. That is exactly why the the split LRU VM does an unconditional deactivation of active anon pages :) -- All rights reversed. -- 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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