Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758723AbYCBTD2 (ORCPT ); Sun, 2 Mar 2008 14:03:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756007AbYCBTDN (ORCPT ); Sun, 2 Mar 2008 14:03:13 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:53671 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755495AbYCBTDL (ORCPT ); Sun, 2 Mar 2008 14:03:11 -0500 Subject: Re: HPL Benchmark performance degradation of kernel 2.6.24.3 vs 2.6.23.14 From: Peter Zijlstra To: Eric Dumazet Cc: Allan Menezes , linux-kernel@vger.kernel.org In-Reply-To: <47CAF675.7010305@cosmosbay.com> References: <47CA3C60.8080402@sympatico.ca> <47CAF675.7010305@cosmosbay.com> Content-Type: text/plain Date: Sun, 02 Mar 2008 20:02:56 +0100 Message-Id: <1204484576.6240.53.camel@lappy> Mime-Version: 1.0 X-Mailer: Evolution 2.21.90 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 557 Lines: 17 On Sun, 2008-03-02 at 19:48 +0100, Eric Dumazet wrote: > Examining your .config, I would point out CONFIG_SLUB_DEBUG=y > You really should disable this expensive option. CONFIG_SLUB_DEBUG_ON is the expensive one. > (and possibly use CONFIG_SLAB instead of CONFIG_SLUB) That is a good thing to test indeed. -- 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/