From owner-freebsd-performance@FreeBSD.ORG Mon Jan 23 20:50:29 2012 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 995FA10656D5 for ; Mon, 23 Jan 2012 20:50:29 +0000 (UTC) (envelope-from jfvogel@gmail.com) Received: from mail-we0-f182.google.com (mail-we0-f182.google.com [74.125.82.182]) by mx1.freebsd.org (Postfix) with ESMTP id 3207A8FC14 for ; Mon, 23 Jan 2012 20:50:28 +0000 (UTC) Received: by werg1 with SMTP id g1so3884210wer.13 for ; Mon, 23 Jan 2012 12:50:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=xey8vCnk+GV2NYTsnW0ggSvnSZSYIVfbf7xoavMMXj0=; b=b7tGVyL0/7Rk6LkAIBBJu04xWS/KT4N8rDfIDF0mC5Wfdghr4gJ/j629cftPlHHaeM vd0DQkYeNlmGeUohnumN8nwI5Eu++iVsycv/q56gLi0wgjeGiujOAzpjHTGEWnE7OFp1 5KrYI1eJ1iaDdj6v+Dk1iHuF7i/1FQmI9sYbk= MIME-Version: 1.0 Received: by 10.216.136.168 with SMTP id w40mr4401963wei.37.1327350309606; Mon, 23 Jan 2012 12:25:09 -0800 (PST) Received: by 10.180.84.66 with HTTP; Mon, 23 Jan 2012 12:25:09 -0800 (PST) In-Reply-To: References: Date: Mon, 23 Jan 2012 12:25:09 -0800 Message-ID: From: Jack Vogel To: Marcin Markowski Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-performance@freebsd.org Subject: Re: Performance problem using Intel X520-DA2 X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Jan 2012 20:50:29 -0000 There may be some interrupt handling changes coming, but at least for the moment you need to increase the storm threshold, or set it to 0 to disable it. Jack On Mon, Jan 23, 2012 at 12:20 PM, Marcin Markowski wrote: > Hello, > > We use FreeBSD as sniffer (libpcap programs) and we experience > performance problems when incoming traffic is greater than 7.5Gbps/s. > If we check 'top' we see that first irq from network card is using > 100% CPU. I've tested this on FreeBSD 8.2-RELEASE and 9.0-RELEASE > (on 9.0 we can see also kernel thread named {ix0 que} using 100% CPU), > and both systems behave the same. In logs we see also: > interrupt storm detected on "irq268:"; throttling interrupt source > > Our server platform is Intel SR2600URBRP, 2x Xeon X5650, 6GB RAM and > NIC Intel X520-DA2. > > I'm not sure if problem is with NIC or motherboard in SR2600URBRP, > because everything is fine when we use other server configuration: > Intel SR1630GP, 1x Xeon X3450, 8GB RAM, NIC X520-DA2 > > My /boot/loader.conf: > kern.ipc.nmbclusters=262144 > hw.ixgbe.rxd=2048 > hw.ixgbe.txd=2048 > hw.ixgbe.num_queues=16 > > /etc/sysctl.conf > hw.intr_storm_threshold=10000 > > -- > Marcin Markowski > > ______________________________**_________________ > freebsd-performance@freebsd.**org mailing list > http://lists.freebsd.org/**mailman/listinfo/freebsd-**performance > To unsubscribe, send any mail to "freebsd-performance-** > unsubscribe@freebsd.org " >