From mboxrd@z Thu Jan 1 00:00:00 1970 From: Otto Sabart Subject: Performance drop on SFC interface (around 30%) Date: Thu, 16 Jun 2016 15:23:29 +0200 Message-ID: <20160616132329.GA27108@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Jirka Hladky , Adam Okuliar , Solarflare linux maintainers , Edward Cree , Bert Kenward To: netdev@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:60716 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752339AbcFPNXc (ORCPT ); Thu, 16 Jun 2016 09:23:32 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: Hello netdev, we see a performance drop (about ~30%) on sfc driver (SFC9020) when performing netperf TCP maerts test. It seems it started from 4.7-rc0. Which commit/change could cause this regression? Any hints? I opened a bugzilla [0] where you can find images with results. [0] https://bugzilla.kernel.org/show_bug.cgi?id=120461 -- Ota