From owner-freebsd-bugs Fri Nov 30 13:49:11 2001 Delivered-To: freebsd-bugs@hub.freebsd.org Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id E98F737B41F; Fri, 30 Nov 2001 13:49:08 -0800 (PST) Received: (from dillon@localhost) by freefall.freebsd.org (8.11.6/8.11.6) id fAULkpE57803; Fri, 30 Nov 2001 13:46:51 -0800 (PST) (envelope-from dillon) Date: Fri, 30 Nov 2001 13:46:51 -0800 (PST) From: Message-Id: <200111302146.fAULkpE57803@freefall.freebsd.org> To: alexander.haderer@charite.de, dillon@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: misc/32141: NFS V3/tcp server: low read performance Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Synopsis: NFS V3/tcp server: low read performance State-Changed-From-To: open->closed State-Changed-By: dillon State-Changed-When: Fri Nov 30 13:43:20 PST 2001 State-Changed-Why: This plus the conversation on freebsd-hackers has led to the discovery of a bug in the transmit burst code for newreno. I have just comitted (to both -current and -stable) a fix to disable this code. In my tests, NFS TCP mounts on a 100BaseT full duplex network went from 80K/sec to 7.9MB/sec with this fix. If you also turn on nfsiod on the client (nfsiod -n 4 on the client) performance increases from 7.9MB/sec to 12MB/sec (which is a fully saturated 100BaseT full duplex link). http://www.FreeBSD.org/cgi/query-pr.cgi?pr=32141 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message