From owner-freebsd-stable@FreeBSD.ORG Mon Jan 21 20:02:39 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7D7E816A419 for ; Mon, 21 Jan 2008 20:02:39 +0000 (UTC) (envelope-from tsawolf@gmail.com) Received: from hs-out-2122.google.com (hs-out-0708.google.com [64.233.178.241]) by mx1.freebsd.org (Postfix) with ESMTP id 2D45A13C44B for ; Mon, 21 Jan 2008 20:02:39 +0000 (UTC) (envelope-from tsawolf@gmail.com) Received: by hs-out-2122.google.com with SMTP id h53so2136748hsh.11 for ; Mon, 21 Jan 2008 12:02:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:cc:mime-version:content-type; bh=hmaNwWBmTRR8j4I0rdYF3UzyxqUeH7wPjrmWvUh8/xQ=; b=Oo43cBqFSrttltnFz/EG0thd/5n4qGpKpeHsekOOvTO+RnZOaPhLQOQroZkTXPf0AsBopjFOdGrJxEDHk8wTOaaXAnFulYYxVa7U+iT3QrB9FvdQ/9QtbWce0JokUcqvaQetCVv+0yZJrWBhoVf+NOHNQt3BcB6NzVemhPvuQ/Y= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:mime-version:content-type; b=iwVMP7i1+2096SaHBYowFbmstLdW37JGy0TUpkm7iak1mej9IXojBW7x7qDpb6YrXMQ54nJVMy4D9gH6fZwgqLH4208MIMzNmB2TwOKsCY/hS56sCmyrvQrwnYPkiFVrRC72PegyIXc0TqtnqRwMzSM2TElYAMNveIxViDpw5pA= Received: by 10.142.229.4 with SMTP id b4mr3466639wfh.118.1200944275984; Mon, 21 Jan 2008 11:37:55 -0800 (PST) Received: by 10.142.178.11 with HTTP; Mon, 21 Jan 2008 11:37:55 -0800 (PST) Message-ID: Date: Mon, 21 Jan 2008 14:37:55 -0500 From: "The Wolf" To: freebsd-stable@freebsd.org MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_9645_143428.1200944275975" X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: shigeaki@f.csce.kyushu-u.ac.jp Subject: Huge number of interrupts on nfe driver 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: Mon, 21 Jan 2008 20:02:39 -0000 ------=_Part_9645_143428.1200944275975 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline Hello everyone. A webserver that I've been working on seems to be having some issues of some sort with the nfe-20071124 driver. We have it running on two gigabit ports, one facing inwards to the database server, and the other facing outwards. The outward facing port is the only one which I currently have bandwidth information on, and it seems to be pushing around 35-40 Mb/s. Unfortunately, there are literally billions of interrupts generated in only a short period of time. In the last 40 days, there are 4,502,689,887 interrupts on the outward facing port, and another 653,327,087 on the inward facing port. It is literally slowing down the machine to a crawl - on a comparatively powerful server that previously performed the same task, load hovered around 0.2 -> 0.4. On the current machine, the load average hovers between 14 and 16. /var/log/messages is flooded with messages such as: kernel: nfe0: watchdog timeout (missed Tx interrupts) -- recovering. Attached I am including portions of the output of lspci, in case there is relevant data there. If there is anything else I can provide you with, please don't hesitate to ask. 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