From owner-freebsd-stable Thu Jul 25 11:36:14 2002 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 2FC1D37B401 for ; Thu, 25 Jul 2002 11:36:12 -0700 (PDT) Received: from HAL9000.homeunix.com (12-233-156-170.client.attbi.com [12.233.156.170]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8FA8143E4A for ; Thu, 25 Jul 2002 11:36:11 -0700 (PDT) (envelope-from dschultz@uclink.Berkeley.EDU) Received: from HAL9000.homeunix.com (localhost [127.0.0.1]) by HAL9000.homeunix.com (8.12.3/8.12.3) with ESMTP id g6PIalH2000843; Thu, 25 Jul 2002 11:36:47 -0700 (PDT) (envelope-from dschultz@uclink.Berkeley.EDU) Received: (from das@localhost) by HAL9000.homeunix.com (8.12.3/8.12.3/Submit) id g6PIakql000842; Thu, 25 Jul 2002 11:36:46 -0700 (PDT) (envelope-from dschultz@uclink.Berkeley.EDU) Date: Thu, 25 Jul 2002 11:36:46 -0700 From: David Schultz To: Jaime Bozza Cc: "'Matthew Dillon'" , stable@FreeBSD.ORG Subject: Re: RE: Abominable NFSv3 read performance / FreeBSD server / Solaris client Message-ID: <20020725183646.GA785@HAL9000.homeunix.com> Mail-Followup-To: Jaime Bozza , 'Matthew Dillon' , stable@FreeBSD.ORG References: <200207250002.g6P02m07030238@apollo.backplane.com> <02d401c233e7$49ef80d0$6401010a@bozza> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <02d401c233e7$49ef80d0$6401010a@bozza> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Thus spake Jaime Bozza : > I also installed tcpdump on the Solaris system so I could look at > dumps between Solaris to Solaris and compare. From that, I noticed the > Solaris server advertises a much smaller (around 24k) window no matter > what, even with the client advertising something higher. (I tried > setting xmit_hiwat in the startup scripts and restarting the Solaris > server to assure the setting was changed before the nfs daemons came > online) I may still not be getting the settings correct, but I'm at a > loss at what I'm missing. Now I'm curious. What is it that makes Solaris<->Solaris performance good despite the TCP breakage? If the server always advertises a tiny window, performance ougut to be equally bad when talking to Solaris or FreeBSD. I've seen threads about this problem before on the lists, and I don't recall anyone coming up with a real answer. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message