From owner-freebsd-stable@FreeBSD.ORG Wed Nov 19 13:02:18 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DA2D4106564A for ; Wed, 19 Nov 2008 13:02:18 +0000 (UTC) (envelope-from lists@mschuette.name) Received: from mail.asta.uni-potsdam.de (mail.asta.uni-potsdam.de [141.89.58.198]) by mx1.freebsd.org (Postfix) with ESMTP id 904A18FC18 for ; Wed, 19 Nov 2008 13:02:18 +0000 (UTC) (envelope-from lists@mschuette.name) Received: from localhost (mail.asta.uni-potsdam.de [141.89.58.198]) by mail.asta.uni-potsdam.de (Postfix) with ESMTP id 58137A26FC for ; Wed, 19 Nov 2008 13:45:25 +0100 (CET) X-Virus-Scanned: on mail at asta.uni-potsdam.de Received: from mail.asta.uni-potsdam.de ([141.89.58.198]) by localhost (mail.asta.uni-potsdam.de [141.89.58.198]) (amavisd-new, port 10024) with ESMTP id gGCdv9jhrQBM for ; Wed, 19 Nov 2008 13:45:13 +0100 (CET) Received: from cordelia.mschuette.name (BAA7033.baa.pppool.de [77.128.112.51]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "Martin Schuette", Issuer "AStA-CA" (verified OK)) by mail.asta.uni-potsdam.de (Postfix) with ESMTP id BB4A5A266A for ; Wed, 19 Nov 2008 13:45:13 +0100 (CET) Message-ID: <49240A58.8010502@mschuette.name> Date: Wed, 19 Nov 2008 13:45:12 +0100 From: =?UTF-8?B?TWFydGluIFNjaMO8dHRl?= User-Agent: Thunderbird 2.0.0.17 (X11/20081003) MIME-Version: 1.0 To: freebsd-stable@freebsd.org References: <49219959.8040209@dotcom.ts.it> In-Reply-To: <49219959.8040209@dotcom.ts.it> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: swap_pager: indefinite wait X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 19 Nov 2008 13:02:18 -0000 Sossi Andrej schrieb: > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 31, size: 4096 > > Can somebody help me understand why the system crashed this way or how > to avoid future crash? This happens when it takes more than 20 seconds to swap out a page (http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/troubleshoot.html#INDEFINITE-WAIT-BUFFER). I had the same problem some time ago with FreeBSD 6.0 when making Backups (so the disks were busy). For me it helped to increase the timeout from 20 to 40 seconds in vm/swap_pager.c (http://fxr.watson.org/fxr/source/vm/swap_pager.c?v=FREEBSD60#L1103) -- Martin