From owner-freebsd-fs@FreeBSD.ORG Tue Oct 21 19:02:00 2003 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DFF8416A4B3 for ; Tue, 21 Oct 2003 19:02:00 -0700 (PDT) Received: from sploot.vicor-nb.com (sploot.vicor-nb.com [208.206.78.81]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2F3CA43FB1 for ; Tue, 21 Oct 2003 19:01:58 -0700 (PDT) (envelope-from kmarx@vicor.com) Received: from vicor.com (localhost [127.0.0.1]) by sploot.vicor-nb.com (8.12.8/8.12.8) with ESMTP id h9M1v2T1016186; Tue, 21 Oct 2003 18:57:03 -0700 (PDT) (envelope-from kmarx@vicor.com) Message-ID: <3F95E3EE.4070401@vicor.com> Date: Tue, 21 Oct 2003 18:57:02 -0700 From: Ken Marx User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.3b) Gecko/20030402 X-Accept-Language: en-us, en MIME-Version: 1.0 To: David Rhodus References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-fs@freebsd.org cc: Cayford Burrell cc: Julian Elischer cc: victor elischer cc: John Lynch cc: Josh Howard cc: Dave Parker Smith Subject: Re: 4.8 ffs_dirpref problem X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Oct 2003 02:02:01 -0000 Wow - quick reply. Thanks! I dunno. Wasn't my idea. I just quickly tried this: In the problem dirs it still bogs down for about 20 seconds or so. I wish I could tell you how long that was taking before, but I wasn't there for that part, and I have to take off just now. The systat -vmstat numbers look similar, but I don't want to make any bold claims. I'll re-disable soft updates, retest in the morning, and report back. Thanks again, k. David Rhodus wrote: > > On Tuesday, October 21, 2003, at 08:48 PM, Ken Marx wrote: > >> Hi, >> >> We have 560GB raids that were sometimes bogging down heavily >> in our production systems. Under 4.8-RELEASE (recently upgrated from 4.4) >> we find that when: >> >> o the raid file system grows to over 85% capacity (with only >> 30% inode usage) >> o we create ~1500 or so 2-6kb files in a given dir >> o (note: soft updates NOT enabled) > > > I have one question, why do you have softupdates turned off ? > With softupdates it could be possible to get faster writes than using > an async mount. > > -DR > > > -- Ken Marx, kmarx@vicor-nb.com They must reach agreement and stop beating around the bush on the long pole in the tent. - http://www.bigshed.com/cgi-bin/speak.cgi