From owner-freebsd-questions Fri Mar 12 6: 1:40 1999 Delivered-To: freebsd-questions@freebsd.org Received: from mail.netacc.net (mail.netacc.net [206.28.142.35]) by hub.freebsd.org (Postfix) with SMTP id A4F2D152B1 for ; Fri, 12 Mar 1999 06:01:38 -0800 (PST) (envelope-from bob@netacc.net) Received: (qmail 7322 invoked from network); 12 Mar 1999 09:01:19 -0500 Received: from net3.netacc.net (bob@206.28.142.3) by mail.netacc.net with SMTP; 12 Mar 1999 09:01:19 -0500 Received: from localhost (bob@localhost) by net3.netacc.net (8.8.8/8.8.8) with ESMTP id IAA12914 for ; Fri, 12 Mar 1999 08:59:59 GMT (envelope-from bob@netacc.net) X-Authentication-Warning: net3.netacc.net: bob owned process doing -bs Date: Fri, 12 Mar 1999 08:59:59 +0000 (GMT) From: Bob Bridgham To: freebsd-questions@freebsd.org Subject: MBUFS Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Question, I just had a server go un-responsive, and when I log'd into it, I tried to ping other local servers, and got an out of buffer cache. So I then tried killing the mail daemon on that server (200 procs total down to 70) and I still got nothing. I tried un-plugging the network for a while. I did an netstat -an to see if there were lots of syn connections for a syn attack and that was not the case. I also did a netstat -m to see mem usage and I was using about 1300 mbufs in use, and i have set : options "NMBCLUSTERS=2048" in my kernel. Is there any way to more thoroughly detect someone eating up the server, and is there any way to free up the buffer cache? Maybe reduce a tcp timeout or something like that? Bob Bridgham Systems Administration Manager NetAccess Inc. Phone : (716) 756-5500 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message