From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4880CF52.5020406@linux-foundation.org> Date: Fri, 18 Jul 2008 12:13:54 -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> <1216375025.3082.7.camel@castor.localdomain> <4880A694.1000100@linux-foundation.org> <1216392177.3082.27.camel@castor.localdomain> <4880AEFE.3060909@linux-foundation.org> <1216394560.3082.32.camel@castor.localdomain> In-Reply-To: <1216394560.3082.32.camel@castor.localdomain> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Richard Kennedy Cc: penberg@cs.helsinki.fi, mpm@selenic.com, linux-mm , lkml , Mel Gorman List-ID: Richard Kennedy wrote: > On Fri, 2008-07-18 at 09:55 -0500, Christoph Lameter wrote: >> OK that is now 4215 pages before and 4112 after the patch? Yawn.... So barely any effect? > > Well it's not huge but there's another 100+ pages out of radix_tree, > too. & I've not inspected the rest of the cache usage. Can you post these numbers with the slabinfo for the radix tree as well? It may be that there are a lot of sparsely populated slab pages that waste memory. -- 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