From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753637AbYJ2Juv (ORCPT ); Wed, 29 Oct 2008 05:50:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753163AbYJ2Jul (ORCPT ); Wed, 29 Oct 2008 05:50:41 -0400 Received: from intermatrixgroup.ru ([195.178.208.66]:49976 "EHLO tservice.net.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752381AbYJ2Juk (ORCPT ); Wed, 29 Oct 2008 05:50:40 -0400 Date: Wed, 29 Oct 2008 12:50:37 +0300 From: Evgeniy Polyakov To: Ingo Molnar Cc: Mike Galbraith , David Miller , alan@lxorguk.ukuu.org.uk, jkosina@suse.cz, akpm@linux-foundation.org, a.p.zijlstra@chello.nl, rjw@sisk.pl, s0mbre@tservice.net.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [tbench regression fixes]: digging out smelly deadmen. Message-ID: <20081029095037.GA7973@ioremap.net> References: <20081027113306.5b1d5898@lxorguk.ukuu.org.uk> <20081027183312.GD11494@elte.hu> <20081027193933.GB2590@ioremap.net> <20081027.124848.163119274.davem@davemloft.net> <1225189462.4903.238.camel@marge.simson.net> <20081028103741.GA22319@elte.hu> <20081029091405.GA3780@ioremap.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081029091405.GA3780@ioremap.net> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 29, 2008 at 12:14:05PM +0300, Evgeniy Polyakov (zbr@ioremap.net) wrote: > vanilla 27 : 347.222 > no TSO/GSO : 357.331 > no hrticks : 382.983 > no balance : 389.802 > 4403b4 commit : 361.184 > dirty_ratio-50 : 361.086 > no-sched-tweaks : 361.367 > > So, probably, if we revert -tip merge to vanilla .27, add nohrtick patch > and nobalance tweak _only_, and apply naive TSO patch we could bring > system to 400 MB/s. Note, that .22 has 479.82 and .23 454.36 MB/s. And now I have to admit that the very last -top merge did noticebly improve the situation upto 391.331 MB/s (189 in domains, with tso/gso off and naive tcp_tso_should_defer() hange). So we are now essentially at the level of 24-25 trees in my tests. -- Evgeniy Polyakov