From owner-freebsd-small Fri Apr 26 9:58:10 2002 Delivered-To: freebsd-small@freebsd.org Received: from mk-smarthost-2.mail.uk.tiscali.com (mk-smarthost-2.mail.uk.worldonline.com [212.74.112.72]) by hub.freebsd.org (Postfix) with ESMTP id 2613D37B404 for ; Fri, 26 Apr 2002 09:58:05 -0700 (PDT) Received: from [212.139.129.126] (helo=bloodhound.uk.worldonline.com) by mk-smarthost-2.mail.uk.tiscali.com with esmtp (Exim 3.35 #1) id 17192H-000FK9-00 for freebsd-small@freebsd.org; Fri, 26 Apr 2002 17:57:29 +0100 Received: from brian by bloodhound.uk.worldonline.com with local (Exim 3.22 #1) id 17192n-0000ik-00 for freebsd-small@freebsd.org; Fri, 26 Apr 2002 17:58:01 +0100 Date: Fri, 26 Apr 2002 17:58:01 +0100 From: Brian Candler To: freebsd-small@freebsd.org Subject: Re: NFS root and unnecessary NFS operations Message-ID: <20020426175801.A2748@linnet.org> References: <20020425174139.A871@linnet.org> <20020426170220.A2475@linnet.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20020426170220.A2475@linnet.org>; from B.Candler@pobox.com on Fri, Apr 26, 2002 at 05:02:20PM +0100 Sender: owner-freebsd-small@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I have found the root cause of this. The NFS attribute cache is cleared every time a file is opened (in nfs_open, right at the end). Getting rid of this drastically reduces the number of NFS ops per second in this test. I will take this up on freebsd-fs and/or freebsd-net... Cheers, Brian. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-small" in the body of the message