From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <487E09DB.3000205@linux-foundation.org> Date: Wed, 16 Jul 2008 09:46:51 -0500 From: Christoph Lameter MIME-Version: 1.0 Subject: Re: [PATCH][RFC] slub: increasing order reduces memory usage of some key caches References: <1216211371.3122.46.camel@castor.localdomain> <487DF5D4.9070101@linux-foundation.org> <1216216730.3122.60.camel@castor.localdomain> <487DFFBE.5050407@linux-foundation.org> <19f34abd0807160733q2594bd9fk268703d2aedc8254@mail.gmail.com> In-Reply-To: <19f34abd0807160733q2594bd9fk268703d2aedc8254@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Vegard Nossum Cc: Richard Kennedy , penberg@cs.helsinki.fi, mpm@selenic.com, linux-mm , lkml , Mel Gorman List-ID: Vegard Nossum wrote: > Hm, I don't think so? I thought that those 1 and 2 were not orders, > but in fact the number of pages. Which seems correct, since now you > have 4096 / 208 = 19 :-) Makes sense. So the problem is that for some reason his kernel chose order 0 for dentries. Mine choose order 1 and everything was fine. Maybe related to the number of processors (my box has 8)? We added some logic in 2.6.26 to increase slab sizes if lots of processors are present. -- 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