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Date: Sat, 03 Mar 2007 20:26:15 -0500 From: Rik van Riel <riel@...hat.com> To: Nick Piggin <npiggin@...e.de> CC: Christoph Lameter <clameter@...r.sgi.com>, Andrew Morton <akpm@...ux-foundation.org>, Mel Gorman <mel@...net.ie>, mingo@...e.hu, jschopp@...tin.ibm.com, arjan@...radead.org, torvalds@...ux-foundation.org, mbligh@...igh.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: The performance and behaviour of the anti-fragmentation related patches 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 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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