Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754847AbYJEMDT (ORCPT ); Sun, 5 Oct 2008 08:03:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753748AbYJEMDA (ORCPT ); Sun, 5 Oct 2008 08:03:00 -0400 Received: from relay.2ka.mipt.ru ([194.85.80.65]:43359 "EHLO 2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753731AbYJEMC7 (ORCPT ); Sun, 5 Oct 2008 08:02:59 -0400 Date: Sun, 5 Oct 2008 16:01:37 +0400 From: Evgeniy Polyakov To: "Rafael J. Wysocki" Cc: Linux Kernel Mailing List , Andrew Morton , Linus Torvalds , Natalie Protasevich , Kernel Testers List , Network Development Subject: Re: 2.6.27-rc8-git7: Reported regressions from 2.6.26 Message-ID: <20081005120136.GA22457@2ka.mipt.ru> References: <0pOgGB.A.uLG.E475IB@wind> <20081005071421.GA17685@2ka.mipt.ru> <200810051302.20896.rjw@sisk.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200810051302.20896.rjw@sisk.pl> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1206 Lines: 27 On Sun, Oct 05, 2008 at 01:02:20PM +0200, Rafael J. Wysocki (rjw@sisk.pl) wrote: > > Just for the reference, this one regresses from the 2.6.23. > > Still, tbench results from 2.6.26 are better than from 2.6.27-rc. > That's why it's still on the list, but if you think that's not relevant, please > let me know and I'll drop it. I meant it continuously regresses from .23 including 26-27 timeframe. There were at least two changes in 26-27 which caused tbench regression in this particular time interval. One of them enabled TSO over loopback by default, so one can turn it off via ethtools or this patch: http://marc.info/?l=linux-netdev&m=122263663631600&w=2 another (hopefully) one I'm trying to find out, which is a bit complex and slow, since e1000 driver changes in the middle of the 26-27 timeframe does not allow my testing machines to boot. So, there is a regression (partially resolved), but it is only part of the problem. -- Evgeniy Polyakov -- 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/