From owner-freebsd-current@FreeBSD.ORG Fri Apr 9 04:26:35 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1F55516A4CE for ; Fri, 9 Apr 2004 04:26:35 -0700 (PDT) Received: from cmsrelay03.mx.net (cmsrelay03.mx.net [165.212.11.112]) by mx1.FreeBSD.org (Postfix) with SMTP id C3CA643D46 for ; Fri, 9 Apr 2004 04:26:34 -0700 (PDT) (envelope-from noackjr@alumni.rice.edu) Received: from uadvg130.cms.usa.net (165.212.11.130) by cmsoutbound.mx.net with SMTP; 9 Apr 2004 11:26:30 -0000 Received: from optimator.noacks.org [65.69.0.65] by uadvg130.cms.usa.net (ASMTP/noackjr@usa.net) via mtad (C8.MAIN.3.13N) with ESMTP id 159iDiLAC0119M30; Fri, 09 Apr 2004 11:26:28 GMT X-USANET-Auth: 65.69.0.65 AUTH noackjr@usa.net optimator.noacks.org Received: from localhost (localhost [127.0.0.1]) by optimator.noacks.org (Postfix) with ESMTP id 7A1826173; Fri, 9 Apr 2004 06:26:27 -0500 (CDT) Received: from optimator.noacks.org ([127.0.0.1]) by localhost (optimator.noacks.org [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 33729-07; Fri, 9 Apr 2004 06:26:26 -0500 (CDT) Received: from alumni.rice.edu (compgeek [192.168.1.10]) by optimator.noacks.org (Postfix) with ESMTP id 2067C615F; Fri, 9 Apr 2004 06:26:26 -0500 (CDT) Message-ID: <40768861.3000401@alumni.rice.edu> Date: Fri, 09 Apr 2004 06:26:25 -0500 From: Jon Noack User-Agent: Mozilla Thunderbird 0.5+ (Windows/20040312) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Artem Koutchine References: <000c01c41cbd$0399e330$0c00a8c0@artem> In-Reply-To: <000c01c41cbd$0399e330$0c00a8c0@artem> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: by amavisd-new at noacks.org cc: freebsd-current@freebsd.org Subject: Re: lock order reversal and swap problems X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: noackjr@alumni.rice.edu List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Apr 2004 11:26:35 -0000 (bugs@ and hardware@ removed) Please read the following before posting again (including the appropriate list-specific sections): http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/eresources.html#ERESOURCES-CHARTERS On 4/7/2004 11:25 AM, Artem Koutchine wrote: > This evening, before going hove i decided to load-test the new server. > I remind the server is: > dual xeon 2.66, 2GB ECC ram, supermicro x5dpeg2 mb, > 3ware 8506-4LP sata radi controller, 4 sata seagate disks, > eveyrthing is install in a RAID5 array. > > I run: > 3 bonnies in a loop, > 4 byteneches in a loop, > 6 my own perl scripts to test the memory. Each allocated about 256MB > ran, fill it with somethingm then free and do it over and over again. > > After 3 minutes of running i saw this: > > Apr 7 20:16:34 new kernel: lock order reversal > Apr 7 20:16:34 new kernel: 1st 0xc79446b4 vm object (vm object) @ > /usr/src/sys/vm/swap_pager.c:1313 > Apr 7 20:16:35 new kernel: 2nd 0xc08b9e00 swap_pager swhash (swap_pager > swhash) @ /usr/src/sys/vm/swap_pager.c:1803 > Apr 7 20:16:35 new kernel: 3rd 0xc7898294 vm object (vm object) @ > /usr/src/sys/vm/uma_core.c:886 It's harmless. This is answered in more detail in a response to your second post on this topic. > and then hundreds and thousands: > > Apr 7 20:20:29 new kernel: swap_pager_getswapspace(16): failed > Apr 7 20:20:32 new last message repeated 44 times > > while actually there were 500MB of swap space left. > > What is going on? I don't know about this. Jon Noack