From owner-freebsd-hackers Thu Dec 13 9: 0:39 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from speedracer.speedtoys.com (mail.speedtoys.com [66.80.10.170]) by hub.freebsd.org (Postfix) with ESMTP id B6E8A37B405 for ; Thu, 13 Dec 2001 09:00:19 -0800 (PST) Received: from localhost (gemohler@localhost) by speedracer.speedtoys.com (8.11.3/8.11.1) with ESMTP id fBDHKGY55686; Thu, 13 Dec 2001 09:20:16 -0800 (PST) Date: Thu, 13 Dec 2001 09:20:16 -0800 (PST) From: Geoff Mohler X-Sender: gemohler@speedracer.speedtoys.com To: Dan Nelson Cc: Mike Silbersack , Matthew Dillon , hackers@FreeBSD.ORG Subject: Re: NFS: How to make FreeBSD fall on its face in one easy step In-Reply-To: <20011213153035.GB56448@dan.emsphone.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG For some people, the overhead is an acceptible tradeoff to redundancy. Ever since Cisco released thier 6500 10/100 blades that to crappy buffering between a Gigabit NFS server (could be anything, just an example) and an 100Mbit client, people have somewhat been adding that overhead to thier CPU and data-rate budgets as "acceptable losses". On Thu, 13 Dec 2001, Dan Nelson wrote: > In the last episode (Dec 13), Mike Silbersack said: > > On Wed, 12 Dec 2001, Matthew Dillon wrote: > > > Geoff Mohler wrote: > > > :Are there any hidden secrets to eeking out more performance from > > > :the BSD NFS client (other than version types and the normal fstab > > > :tweaks). > > > > And if you hadn't heard, Matt just fixed a couple of bugs in the tcp > > stack which improves NFS greatly. It sounds like after this round of > > NFS fixes, the first answer to NFS questions should be: Upgrade to > > 4.5! > > I don't even bother with TCP mounts; my default amd rule says > proto=udp. Is there any reason to add the overhead of the TCP stack if > you're not leaving your own ethernet? > > You should be able to easily saturate a 100mbit link with FreeBSD 4.* > machines, and I can do 15-20MB/sec with Netgear GA620 gigabit nics (SMP > 2 x pIII/600). > > -- > Dan Nelson > dnelson@allantgroup.com > --- Geoff Mohler To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message