Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751272AbaAPS05 (ORCPT ); Thu, 16 Jan 2014 13:26:57 -0500 Received: from qmta01.emeryville.ca.mail.comcast.net ([76.96.30.16]:51153 "EHLO qmta01.emeryville.ca.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750764AbaAPS0y (ORCPT ); Thu, 16 Jan 2014 13:26:54 -0500 Date: Thu, 16 Jan 2014 12:26:52 -0600 (CST) From: Christoph Lameter X-X-Sender: cl@nuc To: Dave Hansen cc: Joonsoo Kim , Pekka Enberg , Andrew Morton , "linux-mm@kvack.org" , LKML Subject: Re: [PATCH 0/9] re-shrink 'struct page' when SLUB is on. In-Reply-To: <52D81214.7070608@sr71.net> Message-ID: References: <20140103180147.6566F7C1@viggo.jf.intel.com> <20140103141816.20ef2a24c8adffae040e53dc@linux-foundation.org> <20140106043237.GE696@lge.com> <52D05D90.3060809@sr71.net> <20140110153913.844e84755256afd271371493@linux-foundation.org> <52D0854F.5060102@sr71.net> <20140113014408.GA25900@lge.com> <52D41F52.5020805@sr71.net> <52D5B48D.30006@sr71.net> <52D81214.7070608@sr71.net> Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 16 Jan 2014, Dave Hansen wrote: > This was a really tight loop where the caches are really hot, but it did > show the large 'struct page' winning: > > http://sr71.net/~dave/intel/slub/slub-perf-20140109.png > > As I said in the earlier description, the paravirt code doing interrupt > disabling was what really hurt the two spinlock cases. Hrm... Ok. in that case the additional complexity may be justified. -- 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/