Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757600AbXLGSAv (ORCPT ); Fri, 7 Dec 2007 13:00:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754315AbXLGSAm (ORCPT ); Fri, 7 Dec 2007 13:00:42 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:47470 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753697AbXLGSAl (ORCPT ); Fri, 7 Dec 2007 13:00:41 -0500 Date: Fri, 7 Dec 2007 09:59:33 -0800 (PST) From: Linus Torvalds To: Steven Rostedt cc: LKML , Christoph Lameter , Ingo Molnar , Peter Zijlstra , Christoph Hellwig Subject: Re: Major regression on hackbench with SLUB In-Reply-To: <1197049846.1645.68.camel@localhost.localdomain> Message-ID: References: <1197049846.1645.68.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 576 Lines: 16 On Fri, 7 Dec 2007, Steven Rostedt wrote: > > The regression is that hackbench slows down tremendously. It goes from > running just under 2 seconds to running around 14 seconds. Can you do one run with oprofile, and see exactly where the cost is? It should hopefully be pretty darn obvious, considering your timing. Linus -- 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/