From mboxrd@z Thu Jan 1 00:00:00 1970 From: Herbert Xu Subject: Re: Why is LRO off by default on ixgbe? Date: Fri, 25 Sep 2009 14:43:03 -0700 Message-ID: <20090925214303.GA3399@gondor.apana.org.au> References: <4ABA57D1.5000905@candelatech.com> <20090925213727.GA3291@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: shemminger@vyatta.com, netdev@vger.kernel.org To: Ben Greear Return-path: Received: from rhun.apana.org.au ([64.62.148.172]:54585 "EHLO arnor.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752257AbZIYVnE (ORCPT ); Fri, 25 Sep 2009 17:43:04 -0400 Content-Disposition: inline In-Reply-To: <20090925213727.GA3291@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, Sep 25, 2009 at 02:37:27PM -0700, Herbert Xu wrote: > > > Ok. It seems GRO was enabled the whole time, but LRO is what gave me the > > extra performance boost. > > > > In this particular case, I'm not actually routing, though I do have ip-forward > > enabled, so I guess LRO will be OK as long as I'm careful... > > What? A driver is either GRO or LRO, it can't be both. What > kernel version was this? Oh perhaps you mean LRO performed by hardware? That would make sense indeed. It's also one of the reasons why we hope the hardware folks would switch over to GRO so we can enable it for everyone :) Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt