From owner-freebsd-stable@FreeBSD.ORG Wed Aug 9 14:10:06 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DBCCE16A4DA for ; Wed, 9 Aug 2006 14:10:06 +0000 (UTC) (envelope-from dom@goodforbusiness.co.uk) Received: from mailhost.graphdata.co.uk (mailhost.graphdata.co.uk [195.12.22.194]) by mx1.FreeBSD.org (Postfix) with ESMTP id 73A9E43D58 for ; Wed, 9 Aug 2006 14:10:05 +0000 (GMT) (envelope-from dom@goodforbusiness.co.uk) Received: from localhost (localhost [127.0.0.1]) by mailhost.graphdata.co.uk (Postfix) with ESMTP id 7E2E3114032; Wed, 9 Aug 2006 15:10:04 +0100 (BST) X-Virus-Scanned: amavisd-new at graphdata.co.uk Received: from mailhost.graphdata.co.uk ([127.0.0.1]) by localhost (mailhost.graphdata.co.uk [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PmuVSf7k3RfJ; Wed, 9 Aug 2006 15:10:02 +0100 (BST) Received: from [192.168.0.86] (gdc083.internal.graphdata.co.uk [192.168.0.86]) by mailhost.graphdata.co.uk (Postfix) with ESMTP id EC66711402F; Wed, 9 Aug 2006 15:10:01 +0100 (BST) Message-ID: <44D9ECB9.5020500@goodforbusiness.co.uk> Date: Wed, 09 Aug 2006 15:10:01 +0100 From: Dominic Marks User-Agent: Thunderbird 1.5.0.4 (X11/20060718) MIME-Version: 1.0 To: Akhmad Sakirun References: <496795293.20060809195310@pacific.net.id> In-Reply-To: <496795293.20060809195310@pacific.net.id> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org Subject: Re: Network often not responding X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Aug 2006 14:10:07 -0000 Akhmad Sakirun wrote: > Hello, > > I have squid cache server using: > MB Tyan Tiger K8W/S2875 > Dual Opteron 246 > 4 GB DDR, > connected to cisco catalyst. > Freebsd AMD64 6.1-Stable > > sometimes network down and up again on uncertain condition > i've tried change network card and disable onboadr gigabit ethernet, > work good for a days then it happen again. > Then i try to move another port on catalyst switch, it's same. > > When network not responding connecting using cross-cable not work too. > it will up again 5 minutes later or more. > > I can't find any relevan error on /var/log/message except something > like this: > Aug 9 15:09:16 cache kernel: xl0: transmission error: 90 > Aug 9 15:09:16 cache kernel: xl0: tx underrun, increasing tx start threshold to 120 bytes > > anyone experienced something like this ? > Googling for the second line I found this: http://lists.freebsd.org/pipermail/freebsd-doc/2005-November/009273.html It quotes this part of the manual page for dc, another network card: "This is from the dc(4) man page: dc%d: TX underrun -- increasing TX threshold The device generated a transmit underrun error while attempting to DMA and transmit a packet. This happens if the host is not able to DMA the packet data into the NIC's FIFO fast enough. The driver will dynamically increase the trans- mit start threshold so that more data must be DMAed into the FIFO before the NIC will start transmitting it onto the wire." So it would seem like the card cannot keep pace with the system. What NICs have you tried? Dom > > > > > > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"