From owner-freebsd-net@FreeBSD.ORG Thu May 24 18:25:47 2007 Return-Path: X-Original-To: net@FreeBSD.org Delivered-To: freebsd-net@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id A5BFF16A41F for ; Thu, 24 May 2007 18:25:47 +0000 (UTC) (envelope-from glebius@FreeBSD.org) Received: from cell.glebius.int.ru (glebius.int.ru [81.19.64.130]) by mx1.freebsd.org (Postfix) with ESMTP id 2DB6D13C44B for ; Thu, 24 May 2007 18:25:46 +0000 (UTC) (envelope-from glebius@FreeBSD.org) Received: from cell.glebius.int.ru (localhost [127.0.0.1]) by cell.glebius.int.ru (8.14.1/8.14.1) with ESMTP id l4OIPkMQ043521 for ; Thu, 24 May 2007 22:25:46 +0400 (MSD) (envelope-from glebius@FreeBSD.org) Received: (from glebius@localhost) by cell.glebius.int.ru (8.14.1/8.14.1/Submit) id l4OIPjWl043520 for net@FreeBSD.org; Thu, 24 May 2007 22:25:45 +0400 (MSD) (envelope-from glebius@FreeBSD.org) X-Authentication-Warning: cell.glebius.int.ru: glebius set sender to glebius@FreeBSD.org using -f Date: Thu, 24 May 2007 22:25:45 +0400 From: Gleb Smirnoff To: net@FreeBSD.org Message-ID: <20070524182545.GF89017@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Disposition: inline User-Agent: Mutt/1.5.15 (2007-04-06) Cc: Subject: TCP problems after 124 days of uptime? 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: Thu, 24 May 2007 18:25:47 -0000 Yesterday two of our web servers running 6.2-PRERELEASE experienced problems with accepting TCP connections. A small percentage of SYN packets was ignored. The packets were seen in tcpdump output, but not processed by TCP stack. No accept queue overflows occured, according to 'netstat -sp tcp'. Failing to find any clue I have rebooted one of them, and after reboot is started to work flawlessly. Reboot also helped the second one. Both servers were booted at the same time - 124 days ago. Any ideas, any similar reports? -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE