Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262722AbVDHHTq (ORCPT ); Fri, 8 Apr 2005 03:19:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262724AbVDHHTp (ORCPT ); Fri, 8 Apr 2005 03:19:45 -0400 Received: from smtp.istop.com ([66.11.167.126]:49803 "EHLO smtp.istop.com") by vger.kernel.org with ESMTP id S262722AbVDHHTn (ORCPT ); Fri, 8 Apr 2005 03:19:43 -0400 From: Daniel Phillips To: Rogan Dawes Subject: Re: Kernel SCM saga.. Date: Fri, 8 Apr 2005 03:21:02 -0400 User-Agent: KMail/1.7 Cc: "H. Peter Anvin" , cw@f00f.org, linux-kernel@vger.kernel.org References: <42562D47.9080705@dawes.za.net> In-Reply-To: <42562D47.9080705@dawes.za.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200504080321.02462.phillips@istop.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 901 Lines: 23 On Friday 08 April 2005 03:05, Rogan Dawes wrote: > Take a look at > http://www.linuxshowcase.org/2001/full_papers/ezolt/ezolt_html/ > > Abstract > > GNU libc's default setting for malloc can cause a significant > performance penalty for applications that use it extensively, such as > Compaq's high performance extended math library, CXML. The default > malloc tuning can cause a significant number of minor page faults, and > result in application performance of only half of the true potential. This does not smell like an n*2 suckage, more like n^something suckage. Finding the elephant under the rug should not be hard. Profile? Regards, Daniel - 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/