From owner-freebsd-performance@FreeBSD.ORG Tue Jun 10 15:23:29 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B445837B401 for ; Tue, 10 Jun 2003 15:23:29 -0700 (PDT) Received: from dfmm.org (walter.dfmm.org [209.151.233.240]) by mx1.FreeBSD.org (Postfix) with ESMTP id 362C343F93 for ; Tue, 10 Jun 2003 15:23:29 -0700 (PDT) (envelope-from jason@shalott.net) Received: (qmail 78996 invoked by uid 1000); 10 Jun 2003 22:23:28 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 10 Jun 2003 22:23:28 -0000 Date: Tue, 10 Jun 2003 15:23:28 -0700 (PDT) From: Jason Stone X-X-Sender: To: In-Reply-To: <3EE595D2.B223CA19@mindspring.com> Message-ID: <20030610150502.H14379-100000@walter> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Subject: Re: Slow disk write speeds over network X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 10 Jun 2003 22:23:30 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > You haven't said if you were using UDP or TCP for the mounts; you > should definitely use TCP with FreeBSD NFS servers; it's also just > generally a good idea, since UDP frags act as a fixed non-sliding > window: NFS over UDP sucks. Huh. I thought that the conventional wisdom was that on a local network with no packet loss (and therefore no re-transmission penalties), udp was way faster because the overhead was so much less. Sorry if this seems like a pretty basic question, but can you explain this? -Jason -------------------------------------------------------------------------- Freud himself was a bit of a cold fish, and one cannot avoid the suspicion that he was insufficiently fondled when he was an infant. -- Ashley Montagu -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) Comment: See https://private.idealab.com/public/jason/jason.gpg iD8DBQE+5lpgswXMWWtptckRAqIUAKCQxIoFOoYuqhOQ5vF9JNwbTe0kbQCghJVe HblPYP54wIyhZVGFwqrDe30= =kbba -----END PGP SIGNATURE-----