From owner-freebsd-questions@FreeBSD.ORG Sun Jun 19 08:42:46 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7C47416A41C for ; Sun, 19 Jun 2005 08:42:46 +0000 (GMT) (envelope-from lefty@ene.asda.gr) Received: from orfeas.asda.gr (orfeas.asda.gr [194.219.142.35]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2350243D1F for ; Sun, 19 Jun 2005 08:42:46 +0000 (GMT) (envelope-from lefty@ene.asda.gr) Received: by orfeas.asda.gr (Postfix, from userid 58) id 0448E5C60; Sun, 19 Jun 2005 11:42:44 +0300 (EEST) Received: from ene.asda.gr (ene.asda.gr [193.92.118.161]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "ene.asda.gr", Issuer "ASDA Root CA" (verified OK)) by orfeas.asda.gr (Postfix) with ESMTP id E95F65C52; Sun, 19 Jun 2005 11:42:42 +0300 (EEST) Received: by ene.asda.gr (Postfix, from userid 58) id 20EDA1142F; Sun, 19 Jun 2005 11:42:43 +0300 (EEST) Received: from ene.asda.gr (marsias.asda.gr [194.219.142.36]) (using SSLv3 with cipher RC4-MD5 (128/128 bits)) (Client CN "Lefteris Tsintjelis", Issuer "ASDA Root CA" (verified OK)) by ene.asda.gr (Postfix) with ESMTP id E6E2A1141E; Sun, 19 Jun 2005 11:42:31 +0300 (EEST) Message-ID: <42B52FF2.B1996C00@ene.asda.gr> Date: Sun, 19 Jun 2005 11:42:26 +0300 From: Lefteris Tsintjelis Organization: ASDA X-Mailer: Mozilla 4.8 [en] (Windows NT 5.0; U) X-Accept-Language: en,el MIME-Version: 1.0 To: Giorgos Keramidas References: <42B481D0.EFA31599@ene.asda.gr> <20050618203437.GA1966@gothmog.gr> <42B4F7A8.87B4AEA6@ene.asda.gr> <20050619072506.GA638@gothmog.gr> Content-Type: text/plain; charset=iso-8859-7 Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on ene.asda.gr X-Spam-Level: X-Spam-Status: score=-2.8 autolearn=ham tests=ALL_TRUSTED,AWL,BAYES_00 Cc: freebsd-questions@freebsd.org Subject: Re: Can't mount partitions with soft-updates enabled with async option X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: lefty@asda.gr List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 19 Jun 2005 08:42:46 -0000 Giorgos Keramidas wrote: > > Squid is such a memory hungry beast that I wouldn't worry about a small > percentage of page faults caused by softupdates. The proxy itself is > probably causing a hell of a lot more page faults as it maps cache files > or as it recycles cache entries :-) You are very right about this one. > Are you absolutely sure it's softupdates that is causing these extra > page faults? (Which *may* be true, because of the extra memory > softupdates need, in order to operate. But how can you tell?) Well, according to squid the page faults were due to physical writes but I can't tell for sure yet. I guess I can try and test it and see what happens. If the percentages are that small then it most definitely isn't worth the trouble at all. My estimated guess was that the numbers would have been greater than just 2-3%. Knowing though how easily an async file system can corrupt, is there the slightest chance this could happen under normal but heavy usage? Thank you all for the responses, Lefteris