From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756658AbbAPQhn (ORCPT ); Fri, 16 Jan 2015 11:37:43 -0500 Received: from smtprelay0229.hostedemail.com ([216.40.44.229]:46848 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753858AbbAPQhm (ORCPT ); Fri, 16 Jan 2015 11:37:42 -0500 X-Session-Marker: 6E657665747340676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::::::::::,RULES_HIT:41:355:379:541:599:800:960:965:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1537:1567:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:2693:3138:3139:3140:3141:3142:3622:3866:3871:3873:3874:4362:4390:5007:6261:7514:7875:7901:7903:9040:10004:10400:10848:10967:11232:11658:11914:12517:12519:12740:13069:13255:13311:13357:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: doll26_2590679a1384f X-Filterd-Recvd-Size: 1920 Date: Fri, 16 Jan 2015 11:37:36 -0500 From: Steven Rostedt To: Eric Dumazet Cc: Christoph Lameter , Andrew Morton , Joonsoo Kim , Pekka Enberg , David Rientjes , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Jesper Dangaard Brouer , Thomas Gleixner , Peter Zijlstra Subject: Re: [PATCH v2 1/2] mm/slub: optimize alloc/free fastpath by removing preemption on/off Message-ID: <20150116113736.59406ea8@gandalf.local.home> In-Reply-To: <1421415659.11734.131.camel@edumazet-glaptop2.roam.corp.google.com> References: <1421307633-24045-1-git-send-email-iamjoonsoo.kim@lge.com> <20150115171634.685237a4.akpm@linux-foundation.org> <20150115203045.00e9fb73@grimm.local.home> <20150115225130.00c0c99a@grimm.local.home> <20150115230749.5d73ad49@grimm.local.home> <1421415659.11734.131.camel@edumazet-glaptop2.roam.corp.google.com> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 16 Jan 2015 05:40:59 -0800 Eric Dumazet wrote: > I made same observation about 3 years ago, on old cpus. > Thank you for letting me know. I was thinking I was going insane! (yeah yeah, there's lots of people who will still say that I've already gone insane, but at least I know my memory is still intact) -- Steve