Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758242AbZAWP4R (ORCPT ); Fri, 23 Jan 2009 10:56:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754841AbZAWP4B (ORCPT ); Fri, 23 Jan 2009 10:56:01 -0500 Received: from smtp.ultrahosting.com ([74.213.174.254]:43694 "EHLO smtp.ultrahosting.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753452AbZAWP4B (ORCPT ); Fri, 23 Jan 2009 10:56:01 -0500 Date: Fri, 23 Jan 2009 10:42:04 -0500 (EST) From: Christoph Lameter X-X-Sender: cl@qirst.com To: Pekka Enberg cc: "Zhang, Yanmin" , Nick Piggin , Lin Ming , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , Linus Torvalds Subject: Re: [patch] SLQB slab allocator In-Reply-To: <1232725065.6094.92.camel@penberg-laptop> Message-ID: References: <84144f020901140645o68328e01ne0e10ace47555e19@mail.gmail.com> <20090114150900.GC25401@wotan.suse.de> <20090114152207.GD25401@wotan.suse.de> <84144f020901140730l747b4e06j41fb8a35daeaf6c8@mail.gmail.com> <20090114155923.GC1616@wotan.suse.de> <20090115061931.GC17810@wotan.suse.de> <20090116034356.GM17810@wotan.suse.de> <20090119061856.GB22584@wotan.suse.de> <1232616430.14549.11.camel@penberg-laptop> <1232616638.11429.131.camel@ymzhang> <1232616792.14549.19.camel@penberg-laptop> <1232725065.6094.92.camel@penberg-laptop> User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 828 Lines: 20 On Fri, 23 Jan 2009, Pekka Enberg wrote: > On Thu, 22 Jan 2009, Pekka Enberg wrote: > > > That is, a list of pages that could be returned to the page allocator > > > but are pooled in SLUB to avoid the page allocator overhead. Note that > > > this will not help allocators that trigger page allocator pass-through. > > On Fri, 2009-01-23 at 10:32 -0500, Christoph Lameter wrote: > > We use the partial list for that. > > Even if the slab is totally empty? The MIN_PARTIAL thingy can keep pages around even if the slab becomes totally empty in order to avoid page allocator trips. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/