From owner-freebsd-isp Wed Feb 21 2:26: 5 2001 Delivered-To: freebsd-isp@freebsd.org Received: from TK147108.tuwien.teleweb.at (home.geizhals.at [213.229.14.34]) by hub.freebsd.org (Postfix) with ESMTP id BBF8337B401 for ; Wed, 21 Feb 2001 02:26:00 -0800 (PST) (envelope-from satyr@TK147108.tuwien.teleweb.at) Received: from satyr by TK147108.tuwien.teleweb.at with local (Exim 2.12 #1) id 14VWUx-0001zd-00 for freebsd-isp@freebsd.org; Wed, 21 Feb 2001 11:27:51 +0100 Date: Wed, 21 Feb 2001 11:27:51 +0100 From: "Marinos J . Yannikos" To: freebsd-isp@freebsd.org Subject: "no memory for tx list"? Message-ID: <20010221112750.A5963@TK147108.geizhals.at> Reply-To: nino@inode.at Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.5i Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi! Our web server just went offline after the following kernel warnings: > Feb 21 11:02:59 c0w /kernel: vr0: no memory for tx list > Feb 21 11:03:30 c0w last message repeated 11 times Is this the result of a new kind of DoS attack? The server has 1 GB RAM and runs 4.1.1-STABLE, the kernel parameters are supposedly set up to handle the traffic of a busy web server. Any hints? netstat -m shows that the peak number of mbuf clusters was the max (4608), so that was the problem. What would be a safe high value for NMBCLUSTERS? Thanks, Marinos -- ***==> Marinos J. Yannikos ***==> http://pobox.com/~mjy To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message