Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262671AbUCESNW (ORCPT ); Fri, 5 Mar 2004 13:13:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262672AbUCESNW (ORCPT ); Fri, 5 Mar 2004 13:13:22 -0500 Received: from the-penguin.otak.com ([65.37.126.18]:49042 "EHLO the-penguin.otak.com") by vger.kernel.org with ESMTP id S262671AbUCESNN (ORCPT ); Fri, 5 Mar 2004 13:13:13 -0500 Date: Fri, 5 Mar 2004 10:13:22 -0800 From: Lawrence Walton To: linux-kernel Subject: server migration Message-ID: <20040305181322.GA32114@the-penguin.otak.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Operating-System: Linux 2.6.4-rc1-mm1 on an i686 User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1395 Lines: 43 Hi all! I tried about four months ago to migrate a busy server to 2.6.0-test9, and failed miserably. Lightly loaded it worked well but as the number of users increased, the number of processes in uninterruptible sleep increased to the hundreds and then the server fell on it's face. I never found out exactly why or what processes where hanging if I guessed it would be openldap. I'd like to take another shot at it with 2.6.3, I'd also like to get some hints on how better to debug the problem; remember it is a live server with live users, I can't spend much time before rebooting back to a 2.4 kernel and yes 2.4.25 runs fine. Things that are non-standard Lots of open files, it's not unusual to have 50000 open files. ext3 is mounted noatime,data=writeback on /home and /var Total processes are usually around 300 to 350. Main applications are: imap, exim and openldap running on Debian. Questions, comments, flames are welcome. -- *--* Mail: lawrence@otak.com *--* Voice: 425.739.4247 *--* Fax: 425.827.9577 *--* HTTP://the-penguin.otak.com/~lawrence -------------------------------------- - - - - - - O t a k i n c . - - - - - - 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/