From owner-freebsd-net@FreeBSD.ORG Fri Oct 2 19:16:30 2009 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 30EB810656B5 for ; Fri, 2 Oct 2009 19:16:30 +0000 (UTC) (envelope-from skip@menantico.com) Received: from vms173007pub.verizon.net (vms173007pub.verizon.net [206.46.173.7]) by mx1.freebsd.org (Postfix) with ESMTP id 12EE38FC23 for ; Fri, 2 Oct 2009 19:16:29 +0000 (UTC) Received: from mx.menantico.com ([71.188.7.134]) by vms173007.mailsrvcs.net (Sun Java(tm) System Messaging Server 6.3-7.04 (built Sep 26 2008; 32bit)) with ESMTPA id <0KQW00ME1IV65DT4@vms173007.mailsrvcs.net> for freebsd-net@freebsd.org; Fri, 02 Oct 2009 14:16:24 -0500 (CDT) Date: Fri, 02 Oct 2009 15:20:41 -0400 From: Skip Ford To: Igor Sysoev Message-id: <20091002192041.GB1168@menantico.com> References: <20091002130646.GC89571@rambler-co.ru> <20091002180621.GA1168@menantico.com> <20091002182927.GA63007@rambler-co.ru> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-disposition: inline In-reply-to: <20091002182927.GA63007@rambler-co.ru> User-Agent: Mutt/1.4.2.3i Cc: freebsd-net@freebsd.org Subject: Re: stuck TIME_WAIT sockets X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Oct 2009 19:16:30 -0000 Igor Sysoev wrote: > On Fri, Oct 02, 2009 at 02:06:21PM -0400, Skip Ford wrote: > > Igor Sysoev wrote: > > > The TIME_WAIT sockets suddenly started to grow on a host running > > > FreeBSD 7.2-STABLE, date=2009.09.06.23.59.59 > > > Usually there are 3,000-5,000 TIME_WAIT sockets on the host. > > > However, today they stared to grow, have reached 110,000 sockets in hour > > > and still remain on this level. > > > net.inet.tcp.msl is 30000. > > > The host uptime is 24 days, 21:53. > > > > Perhaps you need this patch? > > > > Author: peter > > Date: Thu Aug 20 22:53:28 2009 > > New Revision: 196410 > > URL: http://svn.freebsd.org/changeset/base/196410 > > > > Log: > > Fix signed comparison bug when ticks goes negative after 24 days of > > uptime. This causes the tcp time_wait state code to fail to expire > > sockets in timewait state. > > > > Approved by: re (kensmith) > > > > Modified: > > head/sys/netinet/tcp_timewait.c > > Thank you. You're welcome. There've been quite a few ticks-related commits lately, so you might need some of those before this one. Also, there's no 'MFC after' with this commit, which would worry me a little if I were you applying it to 7.2. Seems like a simple fix for a problem you appear to be hitting, however. -- Skip