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Open Source and information security mailing list archives
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Date: Fri, 15 Apr 2011 01:38:42 +0200 From: Andrea Arcangeli <aarcange@...hat.com> To: Mel Gorman <mel@....ul.ie> Cc: raz ben yehuda <raziebe@...il.com>, lkml <linux-kernel@...r.kernel.org>, riel@...hat.com, kosaki.motohiro@...fujitsu.com, akpm@...ux-foundation.org Subject: Re: 2.6.38 page_test regression On Fri, Apr 15, 2011 at 12:16:48AM +0100, Mel Gorman wrote: > Theories better than slightly-different-register-use are welcome. __pte_alloc_one is now skipped 511 times every 512 page faults, so we call alloc_pages 512 times less and we take page_table_lock 512 times less, that explains it I think. We need it... -- 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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