From owner-freebsd-hackers Tue Aug 24 14:38:29 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from peedub.muc.de (newpc.muc.ditec.de [194.120.126.33]) by hub.freebsd.org (Postfix) with ESMTP id 97938150DC for ; Tue, 24 Aug 1999 14:38:12 -0700 (PDT) (envelope-from garyj@peedub.muc.de) Received: from peedub.muc.de (localhost [127.0.0.1]) by peedub.muc.de (8.9.3/8.6.9) with ESMTP id XAA01689; Tue, 24 Aug 1999 23:33:22 +0200 (CEST) Message-Id: <199908242133.XAA01689@peedub.muc.de> X-Mailer: exmh version 2.0.2 2/24/98 To: Christoph Kukulies Cc: hackers@FreeBSD.ORG Subject: Re: mbufs eaten up - when pinging Reply-To: Gary Jennejohn In-reply-to: Your message of "Tue, 24 Aug 1999 17:54:18 +0200." <199908241554.RAA52254@gil.physik.rwth-aachen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 24 Aug 1999 23:33:22 +0200 From: Gary Jennejohn Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Christoph Kukulies writes: > >With a non-functioning route over isdn (i4b) I'm observing >that mbufs allocated soon reach the limit and then I'm getting >'no buffer space' available. I'm not sure whether >the networking stack is still usable for other purposes >but I prefer to reboot. > >I just want to bring up this issue because it looks to >me like some resource leak which need not have to be. > This is not a sign of a leak, rather that thing's are working as designed. The queues only allow a limited number of packets (50 I think) to be put into them before they're full and you start seeing the "no buffer space" message. Maybe it would be clearer if it were "transmit queue is full", or something like that. Obviously, if your ISDN is not sending out any packets then the queues will fill up rather quickly when you do a ping. The easiest way to solve this is to down the interface and then up it. That automatically flushes the queues. You do not have to reboot. You need to fix your ISDN problem :) --- Gary Jennejohn Home - garyj@muc.de Work - garyj@fkr.dec.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message