From owner-freebsd-questions Sat Dec 9 17:20:32 2000 From owner-freebsd-questions@FreeBSD.ORG Sat Dec 9 17:20:30 2000 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from shell.webmaster.com (unknown [216.152.64.152]) by hub.freebsd.org (Postfix) with ESMTP id 0A35C37B400 for ; Sat, 9 Dec 2000 17:20:30 -0800 (PST) Received: from whenever ([216.152.68.2]) by shell.webmaster.com (Post.Office MTA v3.5.3 release 223 ID# 0-12345L500S10000V35) with SMTP id com for ; Sat, 9 Dec 2000 17:19:19 -0800 From: "David Schwartz" To: Subject: Question about mb_map Date: Sat, 9 Dec 2000 17:20:24 -0800 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I have a machine (4.2-STABLE, December 1) with lots of free RAM and a loadaverage of zero. It's maintaining a few thousand connections, and network performance has dropped to basically zero. A 'netstat -m' shows: 1739/18432/18432 mbufs in use (current/peak/max): 323 mbufs allocated to data 1416 mbufs allocated to packet headers 311/4608/4608 mbuf clusters in use (current/peak/max) 13824 Kbytes allocated to network (100% of mb_map in use) 2414666 requests for memory denied 293 requests for memory delayed 1062 calls to protocol drain routines So I've hit the mbuf limit and the mbuf cluser limit at some point in the past. But nothing appears to be the problem now. The counts for memory requests denied or delayed are not increasing. For example, here's another 'netstat -m': 1860/18432/18432 mbufs in use (current/peak/max): 421 mbufs allocated to data 1439 mbufs allocated to packet headers 384/4608/4608 mbuf clusters in use (current/peak/max) 13824 Kbytes allocated to network (100% of mb_map in use) 2414666 requests for memory denied 293 requests for memory delayed 1062 calls to protocol drain routines Any suggestions? Network performance is near-zero now. DS To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message