From mboxrd@z Thu Jan 1 00:00:00 1970 From: Denys Fedoryshchenko Subject: Re: [GIT]: Networking Date: Wed, 20 Aug 2008 00:39:08 +0300 Message-ID: <200808200039.08948.denys@visp.net.lb> References: <20080819.140458.236030589.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: David Miller , akpm@linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: Linus Torvalds Return-path: Received: from relay2.globalproof.net ([194.146.153.25]:40022 "EHLO relay2.globalproof.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754821AbYHSVkW (ORCPT ); Tue, 19 Aug 2008 17:40:22 -0400 In-Reply-To: Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: > Oh, I'm sure that enabling TSO speeds things up, but apparently it also > basically enables a code-path that hasn't been enabled since at least > 2.6.23, no? Well i report about performance regression before too, seems related case, but my report was unclear. And the bug was terrible for me, it was causing very bad performance on REDIRECT and loopback transfers. I am testing also recent net-2.6 with this loopback changes, it seems improve things for me much. So it is really important bugfix for me too. There is always chances that some fix will cause regression, i will try to test this changes on intensive real-life workloads to make sure all fine.