From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thayne Harbaugh Subject: RE: [PATCH] abysmal e1000 performance (DITR) Date: Thu, 26 Aug 2004 14:04:04 -0600 Sender: netdev-bounce@oss.sgi.com Message-ID: <1093550644.20769.130.camel@tubarao> References: <468F3FDA28AA87429AD807992E22D07E014CEF36@orsmsx408> <1093542930.1027.124.camel@jzny.localdomain> Reply-To: tharbaugh@lnxi.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: "Venkatesan, Ganesh" , netdev@oss.sgi.com, "Feldman, Scott" , "Brandeburg, Jesse" Return-path: To: hadi@cyberus.ca In-Reply-To: <1093542930.1027.124.camel@jzny.localdomain> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org On Thu, 2004-08-26 at 13:55 -0400, jamal wrote: > Ganesh, > > Can you please make this feature off by default and perhaps > accesible via ethtool for peopel who want to turn it on. > I just wasted a few hours and was bitten by this performance-wise. > Please consider disabling it. This is a *horrible* problem. Even though it's fixable by passing a module parameter, the default bites those that *know* about it. We have had customers bitten by this and customers that have insisted in swapping all the NICs in a cluster to Broadcom TG3 NICs. It's a black eye for Intel and a loss of business - that's the opinion of our customers. > cheers, > jamal > > On Fri, 2004-06-04 at 11:44, Venkatesan, Ganesh wrote: > > Thayne: > > > > We are studying the patch and will get back to you once we have a plan > > to integrate it into the driver. > > > > Thanks, > > ganesh > > > > ------------------------------------------------- > > Ganesh Venkatesan > > Network/Storage Division, Hillsboro, OR > > > > -----Original Message----- > > From: Thayne Harbaugh [mailto:tharbaugh@lnxi.com] > > Sent: Friday, June 04, 2004 7:20 AM > > To: netdev@oss.sgi.com > > Cc: Venkatesan, Ganesh; Feldman, Scott; Brandeburg, Jesse > > Subject: Re: [PATCH] abysmal e1000 performance (DITR) > > > > I have documented a serious performance problem with DITR in the e1000 > > driver. I have sent a patch to the netdev list as well as CC'ed various > > people at Intel. There has been very little response. I am wondering > > who has reviewed the DITR performance problem and what the plans are for > > fixing it. >