Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753827AbbFPFvj (ORCPT ); Tue, 16 Jun 2015 01:51:39 -0400 Received: from mga02.intel.com ([134.134.136.20]:21997 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751520AbbFPFvb (ORCPT ); Tue, 16 Jun 2015 01:51:31 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,623,1427785200"; d="scan'208";a="711696157" Message-ID: <557FB960.9080202@linux.intel.com> Date: Tue, 16 Jun 2015 13:51:28 +0800 From: Jiang Liu Organization: Intel User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Huang Ying CC: Thomas Gleixner , LKML , LKP ML Subject: Re: [lkp] [x86/MSI] 52f518a3a7c: -30.5% netperf.Throughput_tps References: <557E786D.4080906@intel.com> <557F8559.4040105@linux.intel.com> <1434433270.18774.203.camel@intel.com> In-Reply-To: <1434433270.18774.203.camel@intel.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1294 Lines: 37 On 2015/6/16 13:41, Huang Ying wrote: > Hi, Gerry, > > On Tue, 2015-06-16 at 10:09 +0800, Jiang Liu wrote: >> On 2015/6/16 1:52, Thomas Gleixner wrote: >>> On Mon, 15 Jun 2015, Huang Ying wrote: >> lkml.org/lkml/2015/6/1/80 >> The root cause is that, with hierarchy irqdomain enabled, >> there are multiple irq_data associated with one irq. And function >> irq_move_irq() on x86 uses a wrong copy of irq_data to check >> whether there's pending irq migration operation. So all irq migration >> /set_affinity operations will get pending for ever. This may >> affect network performance due to interrupt load balance issue. >> And the patch set posted at >> www.gossamer-threads.com/lists/linux/kernel/2185533 >> should have solved all such regressions. > > Thanks for your information. Do you have a git tree for this patchset? Hi Ying, You may access the branch at: https://github.com/jiangliu/linux test/irq_data_v3 or view at url: https://github.com/jiangliu/linux/tree/test/irq_data_v3 Thanks! Gerry > > Best Regards, > Huang, Ying > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/