From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752481Ab2BVGQX (ORCPT ); Wed, 22 Feb 2012 01:16:23 -0500 Received: from one.firstfloor.org ([213.235.205.2]:50177 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751031Ab2BVGQW (ORCPT ); Wed, 22 Feb 2012 01:16:22 -0500 Date: Wed, 22 Feb 2012 07:16:18 +0100 From: Andi Kleen To: Konstantin Khlebnikov Cc: Andi Kleen , "linux-mm@kvack.org" , Andrew Morton , "linux-kernel@vger.kernel.org" , Hugh Dickins , KAMEZAWA Hiroyuki , tim.c.chen@linux.intel.com Subject: Re: [PATCH v2 00/22] mm: lru_lock splitting Message-ID: <20120222061618.GT7703@one.firstfloor.org> References: <20120220171138.22196.65847.stgit@zurg> <4F447904.90500@openvz.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F447904.90500@openvz.org> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 22, 2012 at 09:11:32AM +0400, Konstantin Khlebnikov wrote: > Andi Kleen wrote: > >Konstantin Khlebnikov writes: > > > >Konstantin, > > > >>There complete patch-set with my lru_lock splitting > >>plus all related preparations and cleanups rebased to next-20120210 > > > >On large systems we're also seeing lock contention on the lru_lock > >without using memcgs. Any thoughts how this could be extended for this > >situation too? > > We can split lru_lock by pfn-based interleaving. > After all these cleanups it is very easy. I already have patch for this. Cool. If you send it can try it out on a large system. This would split the LRU by pfn too, correct? -Andi