From owner-freebsd-stable Thu Dec 6 9:22:27 2001 Delivered-To: freebsd-stable@freebsd.org Received: from ece.cmu.edu (ECE.CMU.EDU [128.2.136.200]) by hub.freebsd.org (Postfix) with ESMTP id 2EEA737B419; Thu, 6 Dec 2001 09:22:21 -0800 (PST) Received: from pyanfar.ece.cmu.edu (tserver.conference.usenix.org [209.179.127.3]) by ece.cmu.edu (8.11.0/8.10.2) with ESMTP id fB6HMDl12516; Thu, 6 Dec 2001 12:22:13 -0500 (EST) Subject: Re: Whats with this -> sendto: No buffer space available From: "Brandon S. Allbery " KF8NH To: Kal Torak Cc: Doug Silver , Jonathan Hanna , FreeBSD ISP , FreeBSD Stable In-Reply-To: <3C0F1E30.3040508@quake.com.au> References: <3C0F1E30.3040508@quake.com.au> Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Mailer: Evolution/0.99.2 (Preview Release) Date: 07 Dec 2001 01:22:11 +0800 Message-Id: <1007659334.3280.1.camel@pyanfar.ece.cmu.edu> Mime-Version: 1.0 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 On Wed, 2001-12-05 at 23:28, Kal Torak wrote: > The problem the rest of us have is different... I am almost 100% sure > this is being caused by a problem upstream, the data cant get out so > the sendto buffer fills and seems to lock up the interface... I have a > feeling this may be specific to PPP connections, anyone finding this > locks there interface on a non PPP connection??? (pppoe is still ppp > could this even be specific to pppoe??) Add PPTP to the list; that's how I lose. And in my case the "problem" is that when I see it I'm using wavelan to either a machine with a 28.8 dialup, or a congested access point. Also, ppp on the former locks up in this fashion. However, in the case of the PPTP connection there are some differences: - it tends to drop loopback packets as an early indication that it's about to report ENOBUFS; - it recovers by itself after a few minutes. Note that "netstat -m" shows this machine nowhere near any mbuf limits, and increasing #mbufs or #mbclusters has no effect. -- brandon s. allbery [os/2][linux][solaris][japh] allbery@kf8nh.apk.net system administrator [WAY too many hats] allbery@ece.cmu.edu electrical and computer engineering KF8NH carnegie mellon university ["better check the oblivious first" -ke6sls] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message