From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S268766AbUIQN5l (ORCPT ); Fri, 17 Sep 2004 09:57:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268769AbUIQN5l (ORCPT ); Fri, 17 Sep 2004 09:57:41 -0400 Received: from ipcop.bitmover.com ([192.132.92.15]:38885 "EHLO work.bitmover.com") by vger.kernel.org with ESMTP id S268766AbUIQNzn (ORCPT ); Fri, 17 Sep 2004 09:55:43 -0400 Date: Fri, 17 Sep 2004 06:55:35 -0700 From: Larry McVoy To: Denis Vlasenko Cc: William Lee Irwin III , Alan Cox , Larry McVoy , linux-kernel@vger.kernel.org Subject: Re: top hogs CPU in 2.6: kallsyms_lookup is very slow Message-ID: <20040917135534.GA13299@work.bitmover.com> Mail-Followup-To: Larry McVoy , Denis Vlasenko , William Lee Irwin III , Alan Cox , Larry McVoy , linux-kernel@vger.kernel.org References: <200409161428.27425.vda@port.imtp.ilyichevsk.odessa.ua> <200409171421.15470.vda@port.imtp.ilyichevsk.odessa.ua> <20040917121040.GN9106@holomorphy.com> <200409171604.39622.vda@port.imtp.ilyichevsk.odessa.ua> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200409171604.39622.vda@port.imtp.ilyichevsk.odessa.ua> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Is there an easy way to run only this one? I can profile that. > Larry? Absolutely, when you are in the source directory you can see how all this is run, it's just a shell script. Look in ../scripts/lmbench for lat_pipe and run that. In general, the code in LMbench is very very small and it's easy to tinker with the system and add more tests. I've been very surprised over the years that people haven't done so. For what it is worth, we're looking at porting LMbench to Windows using the Unix API layer we did in BitKeeper. -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com