From owner-freebsd-net@FreeBSD.ORG Sat Nov 13 22:27:32 2010 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 D291A106566C for ; Sat, 13 Nov 2010 22:27:32 +0000 (UTC) (envelope-from rysto32@gmail.com) Received: from mail-ew0-f54.google.com (mail-ew0-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id 652D18FC15 for ; Sat, 13 Nov 2010 22:27:31 +0000 (UTC) Received: by ewy3 with SMTP id 3so904949ewy.13 for ; Sat, 13 Nov 2010 14:27:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=kTcgD56XIcT6YszAa/qKOvmZayskRpcVY88lDmBXZwU=; b=sUqZydS4Z98tPT1L2jDOhNDpUAgcPu1414bphuuHkS3BTyNl+sSMkJYlOJgD2taRhH gKhjKmdZtWnkWtWSphzscsHqsNuDIzQr5MemJMWsF2PfRJU1ZMltX7NQc7tXV5KsIENL lJNbsKESOHt1wPHP1pjbYmcl2Us1Il0QeU/iw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=A3pOpakU9RnU4eOYJFQwMpWSjrGmaaNgcDmjPpDtUn5+K8EZF/IFxm/39RrrnyoGtr NNZoZUQ1hoKAmRRMVwVzcj9r+heHdbEUOWbG5UFZtJ505wZKATQbnRSAAcIEU/VqcKvf d8UNU0TZa6t3KGWmaoWA2IsNYXZ1hgYKGl63c= MIME-Version: 1.0 Received: by 10.213.33.82 with SMTP id g18mr3466462ebd.64.1289687251080; Sat, 13 Nov 2010 14:27:31 -0800 (PST) Received: by 10.213.2.143 with HTTP; Sat, 13 Nov 2010 14:27:31 -0800 (PST) In-Reply-To: <4CDF09BD.3050509@mahan.org> References: <4CDF09BD.3050509@mahan.org> Date: Sat, 13 Nov 2010 17:27:31 -0500 Message-ID: From: Ryan Stone To: Patrick Mahan Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-net@freebsd.org Subject: Re: Debugging em(4) driver 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: Sat, 13 Nov 2010 22:27:32 -0000 It looks to me that you're getting a ton of input drops. That's presumably the cause of your issue. You can get the em driver to print debug information to the console by running: # sysctl dev.em.3.stats=1 # sysctl.dev.em.3.debug=1 The output should be available in dmesg and /var/log/messages Hopefully that can shed some light on the nature of the drops.