From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anton Titov Subject: Re: Bad network performance over 2Gbps Date: Thu, 17 Apr 2008 13:02:30 +0300 Message-ID: <1208426550.6049.10.camel@localhost> References: <1208282804.23631.27.camel@localhost> <175f5a0f0804151315x1e192fc7p7dac1e84fd154211@mail.gmail.com> <48051173.5030802@intel.com> <48051734.1000107@redhat.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: "Kok, Auke" , "H. Willstrand" , netdev@vger.kernel.org, Jesse Brandeburg To: Chris Snook Return-path: Received: from filter2.host.bg ([87.120.40.156]:54229 "EHLO filter2.host.bg" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762054AbYDQKLA (ORCPT ); Thu, 17 Apr 2008 06:11:00 -0400 In-Reply-To: <48051734.1000107@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: On Tue, 2008-04-15 at 16:59 -0400, Chris Snook wrote: > Still, I think you're on to something here. Disabling NAPI and instead > tuning the cards' interrupt coalescing settings might allow irqbalance > to do a better job than it is currently. Disabling NAPI allowed me to push as much as 3.5Gbit out of the same server with ~ 20% of time CPUs doing software interrupts. Regards, Anton Titov