From owner-freebsd-stable@FreeBSD.ORG Thu Oct 19 22:13:01 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 8BAC216A494 for ; Thu, 19 Oct 2006 22:13:01 +0000 (UTC) (envelope-from conrad.burger@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.232]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3386143D58 for ; Thu, 19 Oct 2006 22:12:59 +0000 (GMT) (envelope-from conrad.burger@gmail.com) Received: by wx-out-0506.google.com with SMTP id t4so762613wxc for ; Thu, 19 Oct 2006 15:12:58 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=NOnwVkLSaoUpODccFEMz6hsV/sbWG0F5QiKU82/6jMHa5tj1zf17E4UoXKNaND8bBRLpWZY1q/HeSVsF+PwEtSE6tbt8uCsiSfG8ZYy+PlmiLf/EkqQ1FaO5imQPoFfGEcDsI8HRrCQmFiU21YQ+P8g4IDxWwGnxMwcy1EEP+fU= Received: by 10.90.72.10 with SMTP id u10mr700736aga; Thu, 19 Oct 2006 15:12:58 -0700 (PDT) Received: by 10.90.114.6 with HTTP; Thu, 19 Oct 2006 15:12:58 -0700 (PDT) Message-ID: Date: Fri, 20 Oct 2006 00:12:58 +0200 From: "Conrad Burger" To: "Bill Moran" In-Reply-To: <20061019130040.5f06baf7.wmoran@collaborativefusion.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_128523_11302630.1161295978155" References: <45364782.8090209@samsco.org> <45366122.6090704@mintel.com> <20061019130040.5f06baf7.wmoran@collaborativefusion.com> X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Jason Thomson , freebsd-stable@freebsd.org Subject: Re: When will the new BCE driver in HEAD be incorporated into RELENG_6? 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: Thu, 19 Oct 2006 22:13:01 -0000 ------=_Part_128523_11302630.1161295978155 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline On 19/10/06, Bill Moran wrote: > In response to Jason Thomson : > > > Scott Long wrote: > > > Conrad Burger wrote: > > > > > >> Hi > > >> > > >> It looks like there is a "new" version of the bce driver in HEAD. > > >> When will it be incorporated into Releng_6? > > > > > > > > > It will be merged when someone, preferably 2-3 people, tell me that > > > the changes in HEAD work for them. So far, no one has. > > > > > > Scott > > > _______________________________________________ > > > > Using the driver from HEAD* in the latest RELENG_6 didn't fix our > > problems. > > > > We could still trigger the Watchdog timeout when copying a local file to > > an NFS mounted filesystem (UDP mount, GigE speeds). > > Same here, although it seemed to require a lot more effort to produce the > problem. > > I see there have been additional updates to the driver in the past 10 > hours. I'll grab those and try again to see if they help any. > > -- > Bill Moran > Collaborative Fusion Inc. > Would it be possible for someone to provide instructions on how to compile the new bce driver in HEAD on RELENG_6? Just to give you an idea of the problem we are sitting with. Attached is an image of a comparison between a FreeBSD 5.4 with em and a FreeBSD 6.2-pre with bce. The blue line is the 5.4 system. You will notice how smooth the graph is for the 5.4 system. The image can also be downloaded at "http://www.mxit.co.za/mxa_227430610303000_sess.png_bytesinout.png" Both systems run the same java app and both receive the same load. On the 6.2-pre network I/Os sometime takes up to 7 seconds to complete. We are starting to think that the performance difference might have something to do with synchronization within the bce dirver/SMP network stack... we don't know enough so any help would be much appreciated! Does anyone know how to disable interrupt coalescing on the bce driver? Regards Conrad ------=_Part_128523_11302630.1161295978155--