From owner-freebsd-questions Mon Nov 29 3:38:13 1999 Delivered-To: freebsd-questions@freebsd.org Received: from axl.noc.iafrica.com (axl.noc.iafrica.com [196.31.1.175]) by hub.freebsd.org (Postfix) with ESMTP id 1385514ECD for ; Mon, 29 Nov 1999 03:37:29 -0800 (PST) (envelope-from sheldonh@axl.noc.iafrica.com) Received: from sheldonh (helo=axl.noc.iafrica.com) by axl.noc.iafrica.com with local-esmtp (Exim 3.040 #1) id 11sP7J-0007Nm-00; Mon, 29 Nov 1999 13:37:13 +0200 From: Sheldon Hearn To: mideyon Cc: freebsd-questions@FreeBSD.ORG Subject: Re: nmap question In-reply-to: Your message of "Sat, 27 Nov 1999 00:50:53 CST." <383F7F4A.7610AE6C@fastlane.net> Date: Mon, 29 Nov 1999 13:37:13 +0200 Message-ID: <28381.943875433@axl.noc.iafrica.com> Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 27 Nov 1999 00:50:53 CST, mideyon wrote: > sendto in send_tcp_raw: sendto(3, packet, 40, 0, x.x.x.x, 16) => No > buffer space available > Sleeping 15 seconds then retrying > > it keeps doing this What release of FreeBSD are you using? Try watching mbuf utilization while you're running nmap, ideally in another xterm or on another console. You can do this with: while true; do netstat -m ; sleep 1 ; done Once you have a screen's worth of data, watching the output should get easier on the eyes. :-) Particularly, watch the "mbufs in use" ratio. If you notice it approaching 100% utilization, you may want to consider running a kernel compiled with a higher maxusers (or NMBCLUSTERS). I'm not sure that this has anything at all to do with our problem, but it's worth a shot to try in the meantime while you're waiting for more clueful responses. Ciao, Sheldon. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message