From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <45EA2037.9060303@redhat.com> Date: Sat, 03 Mar 2007 20:26:15 -0500 From: Rik van Riel MIME-Version: 1.0 Subject: Re: The performance and behaviour of the anti-fragmentation related patches References: <20070302050625.GD15867@wotan.suse.de> <20070302054944.GE15867@wotan.suse.de> <20070302060831.GF15867@wotan.suse.de> <20070302062950.GG15867@wotan.suse.de> <20070302071955.GA5557@wotan.suse.de> <20070302081210.GD5557@wotan.suse.de> In-Reply-To: <20070302081210.GD5557@wotan.suse.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Christoph Lameter , Andrew Morton , Mel Gorman , mingo@elte.hu, jschopp@austin.ibm.com, arjan@infradead.org, torvalds@linux-foundation.org, mbligh@mbligh.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: Nick Piggin wrote: > Different issue, isn't it? Rik wants to be smarter in figuring out which > pages to throw away. More work per page == worse for you. Being smarter about figuring out which pages to evict does not equate to spending more work. One big component is sorting the pages beforehand, so we do not end up scanning through (and randomizing the LRU order of) anonymous pages when we do not want to, or cannot, evict them anyway. -- Politics is the struggle between those who want to make their country the best in the world, and those who believe it already is. Each group calls the other unpatriotic. -- 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