Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754279AbYK1Ss0 (ORCPT ); Fri, 28 Nov 2008 13:48:26 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752519AbYK1SsO (ORCPT ); Fri, 28 Nov 2008 13:48:14 -0500 Received: from viefep18-int.chello.at ([213.46.255.22]:4650 "EHLO viefep18-int.chello.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752503AbYK1SsN (ORCPT ); Fri, 28 Nov 2008 13:48:13 -0500 X-SourceIP: 213.46.9.244 Subject: Re: [PATCH 0/6] fs: Scalability of sockets/pipes allocation/deallocation on SMP From: Peter Zijlstra To: Ingo Molnar Cc: Eric Dumazet , David Miller , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, kernel-testers@vger.kernel.org, Mike Galbraith , Linux Netdev List , Christoph Lameter , Christoph Hellwig In-Reply-To: <20081128180318.GL10487@elte.hu> References: <20081121083044.GL16242@elte.hu> <49267694.1030506@cosmosbay.com> <20081121.010508.40225532.davem@davemloft.net> <4926AEDB.10007@cosmosbay.com> <4926D022.5060008@cosmosbay.com> <20081121152148.GA20388@elte.hu> <4926D39D.9050603@cosmosbay.com> <20081121153453.GA23713@elte.hu> <492DDB6A.8090806@cosmosbay.com> <20081128180318.GL10487@elte.hu> Content-Type: text/plain Date: Fri, 28 Nov 2008 19:47:56 +0100 Message-Id: <1227898076.7392.16.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 838 Lines: 24 On Fri, 2008-11-28 at 19:03 +0100, Ingo Molnar wrote: > * Eric Dumazet wrote: > > > Hi all > > > > Short summary : Nice speedups for allocation/deallocation of sockets/pipes > > (From 27.5 seconds to 1.6 second) > > Wow, that's incredibly impressive! :-) Yeah, we got a similar speedup on -rt by pushing those super-block files list into per-cpu lists and doing crazy locking on them. Of course avoiding them all together, like done here is a nicer option but is sadly not a possibility for regular files (until hch gets around to removing the need for the list). -- 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/