From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753563Ab2HBVuL (ORCPT ); Thu, 2 Aug 2012 17:50:11 -0400 Received: from plane.gmane.org ([80.91.229.3]:40347 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753133Ab2HBVuJ (ORCPT ); Thu, 2 Aug 2012 17:50:09 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: Aaron Scamehorn Subject: Re: High CPU usage of scheduler? Date: Thu, 2 Aug 2012 21:45:12 +0000 (UTC) Message-ID: References: <20120427031013.GA9131@zhy> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: sea.gmane.org User-Agent: Loom/3.14 (http://gmane.org/) X-Loom-IP: 38.98.186.242 (Mozilla/5.0 (X11; Linux x86_64; rv:10.0.4) Gecko/20120424 Firefox/10.0.4) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dave Johansen gmail.com> writes: > > Here's an updated version that measures the user and system time of > each thread and also outputs those results. It also has a correction > for how the mean and standard deviation are updated inside of the > outer_iterations loop. > > The updated results are available here: > http://unix.stackexchange.com/questions/37391/high-cpu-usage-with-cfs > and here: > https://bugzilla.redhat.com/show_bug.cgi?id=812148 > > Any other tests I can run to help diagnose the problem? > > Thanks, > Dave > > Attachment (test_sleep.c): text/x-csrc, 11 KiB I tried to take a look at that bugzilla, but Redhat is saying that it is "an internal bugzilla, and not visible to the public." Have there been any updates on this? Thanks, Aaron