From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 9 May 2005 23:30:28 +0200 From: Arjan van de Ven Subject: Re: Fw: [Bug 4520] New: /proc/*/maps fragments too quickly compared to Message-ID: <20050509213027.GA3963@devserv.devel.redhat.com> References: <17023.26119.111329.865429@gargle.gargle.HOWL> <20050509142651.1d3ae91e.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050509142651.1d3ae91e.akpm@osdl.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Wolfgang Wander , mingo@elte.hu, linux-mm@kvack.org List-ID: On Mon, May 09, 2005 at 02:26:51PM -0700, Andrew Morton wrote: > Possibly for the 2.6.12 release the safest approach would be to just > disable the free area cache while we think about it. the free area cache either is historically tricky to be fair; it has the thankless job of either keeping at the "ealiest" small hole (and thus being useless if most allocs are bigger than that hole) or leaving an occasionally small hole alone and thus fragmenting memory more, like you've shown. I like neither to be honest; the price however is a higher lookup cost (well mitigated if vma merging is really effective) -- 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: aart@kvack.org