From owner-freebsd-questions@FreeBSD.ORG Sun Sep 28 16:17:15 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 91797106575F for ; Sun, 28 Sep 2008 16:17:15 +0000 (UTC) (envelope-from wmoran@potentialtech.com) Received: from mail.potentialtech.com (internet.potentialtech.com [66.167.251.6]) by mx1.freebsd.org (Postfix) with ESMTP id 637618FC15 for ; Sun, 28 Sep 2008 16:17:15 +0000 (UTC) (envelope-from wmoran@potentialtech.com) Received: from working (pool-72-95-226-5.pitbpa.ftas.verizon.net [72.95.226.5]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.potentialtech.com (Postfix) with ESMTPSA id 53051EBC09; Sun, 28 Sep 2008 12:17:14 -0400 (EDT) Date: Sun, 28 Sep 2008 12:17:13 -0400 From: Bill Moran To: Wojciech Puchar Message-Id: <20080928121713.5c905a40.wmoran@potentialtech.com> In-Reply-To: <20080928165534.X96877@wojtek.tensor.gdynia.pl> References: <00d101c92154$691f53c0$3b5dfb40$@com> <48DF78C3.9080401@infracaninophile.co.uk> <20080928165534.X96877@wojtek.tensor.gdynia.pl> X-Mailer: Sylpheed 2.5.0 (GTK+ 2.12.11; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Danny Do , freebsd-questions@freebsd.org Subject: Re: Hard disk bottle neck. X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Sep 2008 16:17:15 -0000 Wojciech Puchar wrote: > > after you recompile the kernel with that patch, check your disk > performance in some directory consisting of many large files > > cd that_dir > for x in *;do (cat $x >/dev/null &);done > > while running systat,:vmstat on another console More specifically, do this before and after you make the change, to demonstrate whether or not you actually fixed the problem. -- Bill Moran http://www.potentialtech.com