From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with SMTP id 2007E6B003D for ; Thu, 30 Apr 2009 09:08:19 -0400 (EDT) Message-ID: <49F9A2B6.6070801@redhat.com> Date: Thu, 30 Apr 2009 09:08:06 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [PATCH] vmscan: evict use-once pages first (v2) References: <20090428044426.GA5035@eskimo.com> <20090428192907.556f3a34@bree.surriel.com> <1240987349.4512.18.camel@laptop> <20090429114708.66114c03@cuia.bos.redhat.com> <20090430072057.GA4663@eskimo.com> In-Reply-To: <20090430072057.GA4663@eskimo.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Elladan Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, tytso@mit.edu, kosaki.motohiro@jp.fujitsu.com, linux-mm@kvack.org List-ID: Elladan wrote: >> Elladan, does this smaller patch still work as expected? > The system does seem relatively responsive with this patch for the most part, > with occasional lag. I don't see much evidence at least over the course of a > few minutes that it pages out applications significantly. It seems about > equivalent to the first patch. OK, good to hear that. > This seems ok (not disastrous, anyway). I suspect desktop users would > generally prefer the VM were extremely aggressive about keeping their > executables paged in though, I agree that desktop users would probably prefer something even more aggressive. However, we do need to balance this against other workloads, where inactive file pages need to be given a fair chance to be referenced twice and promoted to the active file list. Because of that, I have chosen a patch with a minimal risk of regressions on any workload. -- All rights reversed. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org