From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756616AbcEEJdn (ORCPT ); Thu, 5 May 2016 05:33:43 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:55280 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756286AbcEEJdm (ORCPT ); Thu, 5 May 2016 05:33:42 -0400 Date: Thu, 5 May 2016 11:33:38 +0200 From: Peter Zijlstra To: Chris Mason , Mike Galbraith , Ingo Molnar , Matt Fleming , linux-kernel@vger.kernel.org Subject: Re: sched: tweak select_idle_sibling to look for idle threads Message-ID: <20160505093338.GK3448@twins.programming.kicks-ass.net> References: <20160430124731.GE2975@worktop.cust.blueprintrf.com> <1462086753.9717.29.camel@suse.de> <20160502084615.GB3430@twins.programming.kicks-ass.net> <1462200604.3736.42.camel@suse.de> <20160502145817.GW3408@twins.programming.kicks-ass.net> <20160502154725.ckiewczbdubudyc7@floor.masoncoding.com> <20160503143225.GG3448@twins.programming.kicks-ass.net> <20160503151153.wp6jcnjadmw2ypmx@floor.masoncoding.com> <20160504154510.GH3448@twins.programming.kicks-ass.net> <20160504174616.k4xud2w232b6m4by@floor.masoncoding.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160504174616.k4xud2w232b6m4by@floor.masoncoding.com> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 04, 2016 at 01:46:16PM -0400, Chris Mason wrote: > It should, make sure you're at the top commit in git. > > git://git.kernel.org/pub/scm/linux/kernel/git/mason/schbench.git I did double check; I am on the top commit of that. I refetched and rebuild just to make tripple sure. > It's not recent so I'd be surprised if you weren't already there. The > default runtime is 30 seconds, but you can use -r to specify something > shorter. > > It's possible I'm missing a wakeup to shut the whole thing down, but I > thought I fixed that. Seems to still be missing, because: > ./schbench -p 4 -m 1 -t 1 > Latency percentiles (usec) > 50.0000th: 5 > 75.0000th: 5 > 90.0000th: 5 > 95.0000th: 5 > *99.0000th: 8 > 99.5000th: 15 > 99.9000th: 17 > Over=0, min=0, max=652 > avg worker transfer: 113768.27 ops/sec 444.41KB/s is not what mine does. I get ~25sec of cpu time and then it stalls forever. I'll try and have a prod at the program itself if you have no pending changes on your end.