From owner-freebsd-stable@FreeBSD.ORG Sun Apr 17 21:06:11 2005 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2216316A4CE for ; Sun, 17 Apr 2005 21:06:11 +0000 (GMT) Received: from freebee.digiware.nl (dsl439.iae.nl [212.61.63.187]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8703A43D39 for ; Sun, 17 Apr 2005 21:06:09 +0000 (GMT) (envelope-from wjw@withagen.nl) Received: from [212.61.27.71] (dual.digiware.nl [212.61.27.71]) by freebee.digiware.nl (8.13.1/8.13.1) with ESMTP id j3HL67ms054731; Sun, 17 Apr 2005 23:06:07 +0200 (CEST) (envelope-from wjw@withagen.nl) Message-ID: <4262CFBF.4090709@withagen.nl> Date: Sun, 17 Apr 2005 23:06:07 +0200 From: Willem Jan Withagen User-Agent: Mozilla Thunderbird 0.9 (Windows/20041103) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Kris Kennaway , stable@freebsd.org References: <6eb82e05041500274172afd3@mail.gmail.com> <20050416122222.GA12385@totem.fix.no> <6eb82e0504160536572e068c@mail.gmail.com> <20050416183755.GB61170@xor.obsecurity.org> In-Reply-To: <20050416183755.GB61170@xor.obsecurity.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: NFS defaults for read/write blocksize....(Was: Re: 5.4/amd64 console hang) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 17 Apr 2005 21:06:11 -0000 Kris Kennaway wrote: >>By the way, I'm thinking that more frequently hang might related with >>large read/write block in mount_nfs -r/-w (I use 8192, original is 1024). > > > That's certainly possible since non-default settings don't get as much > testing. It would be good to get a traceback. Has it even been considered to up these values to something bigger?? Reason I ask, is since some discussions from a year ago tempted me to do some (non-scientific) NFS performance testing. (http://witahgen.dyndns.org/FreeBSD/nfs-performance/) Ever since then I'm of the opinion that sizes of read/write should be at least 8K, or bigger depending on the data. And yes, I'm aware that bonnie can hardly be considered a serious benchmark tool. But I would think that the results would warant at least this change. I no longer have some of the hardware, so redoing this test with something like 'make buildworld' is not really possible. But I'm looking into getting again a series of older boxes to run some more tests on. --WjW