From owner-freebsd-questions@FreeBSD.ORG Tue Nov 22 21:15:28 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 283101065698 for ; Tue, 22 Nov 2011 21:15:28 +0000 (UTC) (envelope-from Ggatten@waddell.com) Received: from emlpirnp0.waddell.com (emlpirnp0.waddell.com [67.130.252.22]) by mx1.freebsd.org (Postfix) with ESMTP id B38BB8FC13 for ; Tue, 22 Nov 2011 21:15:27 +0000 (UTC) Received: from mailhost2.waddell.com (HELO emlpfilt2.waddell.com) ([10.1.10.30]) by emlpirnp1.waddell.com with ESMTP; 22 Nov 2011 15:15:27 -0600 Received: from emlpfilt2.waddell.com (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id F410F308003; Tue, 22 Nov 2011 15:15:26 -0600 (CST) Received: from ADVPHTCAS0.wradvisors.com (advphtcas0.wradvisors.com [192.168.203.228]) by emlpfilt2.waddell.com (Postfix) with ESMTP id EE0AC308002; Tue, 22 Nov 2011 15:15:26 -0600 (CST) Received: from WADPMBXV0.waddell.com ([169.254.1.85]) by ADVPHTCAS0.wradvisors.com ([192.168.203.228]) with mapi; Tue, 22 Nov 2011 15:15:26 -0600 From: Gary Gatten To: "'kjkoster@gmail.com'" , "'freebsd-questions@freebsd.org'" Date: Tue, 22 Nov 2011 15:15:25 -0600 Thread-Topic: Diagnosing packet loss Thread-Index: AcypWlSwWg1PON3aRb6PMaJkLPpWkAAAYWpT Message-ID: <2973_1321996526_4ECC10EE_2973_123_1_D9B37353831173459FDAA836D3B43499D2C69D77@WADPMBXV0.waddell.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: Subject: Re: Diagnosing packet loss X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 22 Nov 2011 21:15:28 -0000 Well, 1% is not good but I've seen worse for sure! Sounds like you tried t= he obvious. I would recommend a different IP to rule out a dupe ip; else i= t must be NIC related - either hardware or driver. Also, perhaps swap cabl= es and ports with a working machine and see if the problem follows or stays= put. ----- Original Message ----- From: Kees Jan Koster [mailto:kjkoster@gmail.com] Sent: Tuesday, November 22, 2011 02:33 PM To: freebsd-questions@freebsd.org Subject: Diagnosing packet loss Dear All, I am stuck with a machine that shows serious packet loss (about 1% of all t= raffic is dropped). I tried the obvious (new network cable, different switc= h port, different ethernet interface on the machine), but the problems rema= in. Another machine that sits in the same rack and is hooked up to the same swi= tch shows no such packet loss issues. The problematic machine is a dual Opt= eron with FreeBSD 8.2-STABLE from Thu Aug 11 14:05:47 CEST 2011. The machine is lightly loaded. A MySQL slave is running, but the machine is= not serving queries. Plus a Munin server process. I am at a loss where to start diagnosing this. Can you advise me where to l= ook? Are there network buffers that may be overflowing? -- Kees Jan http://java-monitor.com/ kjkoster@kjkoster.org +31651838192 Change is good. Granted, it is good in retrospect, but change is good. _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
"This email is intended to be reviewed by only the intended recipient and may contain information that is privileged and/or confidential. If you are not the intended recipient, you are hereby notified that any review, use, dissemination, disclosure or copying of this email and its attachments, if any, is strictly prohibited. If you have received this email in error, please immediately notify the sender by return email and delete this email from your system."