From owner-freebsd-stable@FreeBSD.ORG Thu Dec 23 10:30:47 2004 Return-Path: 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 9FE1216A4CE for ; Thu, 23 Dec 2004 10:30:47 +0000 (GMT) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 42D9743D2D for ; Thu, 23 Dec 2004 10:30:47 +0000 (GMT) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (localhost [127.0.0.1]) by fledge.watson.org (8.13.1/8.13.1) with ESMTP id iBNARfcs096728; Thu, 23 Dec 2004 05:27:41 -0500 (EST) (envelope-from robert@fledge.watson.org) Received: from localhost (robert@localhost)iBNAReDD096725; Thu, 23 Dec 2004 10:27:41 GMT (envelope-from robert@fledge.watson.org) Date: Thu, 23 Dec 2004 10:27:40 +0000 (GMT) From: Robert Watson X-Sender: robert@fledge.watson.org To: Christian Weisgerber In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-stable@freebsd.org Subject: Re: 5.3-STABLE/alpha: re(4) slowdown X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Dec 2004 10:30:47 -0000 On Thu, 23 Dec 2004, Christian Weisgerber wrote: > After updating my 5.3-STABLE/alpha from Dec 4 to Dec 22 on RELENG_5, > network _receiving_ throughput on its re(4) interface has collapsed to a > maximum of 0.5-1.0 MB/s. (Figures from scp. Yes, I realize this is not > the most suitable test, but the box is not CPU starved and used to > receive data at several times that rate.) I use the machine as X11 > display and quickly noticed that remote X11 apps had become unusually > slow. IPv4 and v6 are equally affected. Could you use a tool like netperf to see whether the slowdown is specific to TCP, or affects UDP also? There have been some TCP tweaks and bugfixes, and this would help isolate that. Seeing the results of a netperf run with the UDP_RR and UDP_STREAM tests in the "before" and "after" scenarios would be helpful. Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research > > There haven't been any changes to if_re.c in this period. Any other > changes that could explain this? > > -- > Christian "naddy" Weisgerber naddy@mips.inka.de > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >