From owner-freebsd-current@FreeBSD.ORG Tue Apr 12 13:33:20 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 922AF1065673 for ; Tue, 12 Apr 2011 13:33:20 +0000 (UTC) (envelope-from s.seira@cdmon.com) Received: from correo.cdmon.com (correo.cdmon.com [212.36.82.9]) by mx1.freebsd.org (Postfix) with ESMTP id 4EB2A8FC12 for ; Tue, 12 Apr 2011 13:33:19 +0000 (UTC) Received: from genocida (localhost.cdmon.com [127.0.0.1]) by correo.cdmon.com (Postfix) with ESMTP id 01CE8130F3C for ; Tue, 12 Apr 2011 15:14:39 +0200 (CEST) Received: from antispam (localhost.cdmon.com [127.0.0.1]) by correo.cdmon.com (Postfix) with ESMTP id ADA89130E84 for ; Tue, 12 Apr 2011 15:14:38 +0200 (CEST) Received: from [192.168.0.30] (155.Red-88-2-251.staticIP.rima-tde.net [88.2.251.155]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by correo.cdmon.com (Postfix) with ESMTP id 50FCC130E38 for ; Tue, 12 Apr 2011 15:14:38 +0200 (CEST) Message-ID: <4DA45042.5060204@cdmon.com> Date: Tue, 12 Apr 2011 15:14:42 +0200 From: Sergi Seira User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100515 Lightning/1.0b1 Icedove/3.0.4 MIME-Version: 1.0 To: freebsd-current@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: background fsck high load on 8.1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Apr 2011 13:33:20 -0000 Hello, we've experienced that background fsck on 8.1 degrades server performance on a higher degree than in previous fbsd versions (6.3, 7.3; amd64). We've noticed it after upgrading - same hardware - to a 8.1-RELEASE. Now, performance of other services (i.e. apache, mysql) during a background fsck falls miserably. Is there any way to calm fsck down?, nice(1)?, some sysctl? We have also gmirror, but we prevent to rebuild it if there is a fsck running in background. Thanks for your help, regards, Sergi