From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753150Ab1DENdm (ORCPT ); Tue, 5 Apr 2011 09:33:42 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:39142 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752022Ab1DENdk convert rfc822-to-8bit (ORCPT ); Tue, 5 Apr 2011 09:33:40 -0400 Subject: Re: [patch 05/15] sched: unthrottle cfs_rq(s) who ran out of quota at period refresh From: Peter Zijlstra To: Paul Turner Cc: linux-kernel@vger.kernel.org, Bharata B Rao , Dhaval Giani , Balbir Singh , Vaidyanathan Srinivasan , Srivatsa Vaddagiri , Kamalesh Babulal , Ingo Molnar , Pavel Emelyanov , Nikhil Rao In-Reply-To: <1302010093.2225.1328.camel@twins> References: <20110323030326.789836913@google.com> <20110323030449.142198821@google.com> <1302010093.2225.1328.camel@twins> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Tue, 05 Apr 2011 15:33:29 +0200 Message-ID: <1302010409.2225.1337.camel@twins> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2011-04-05 at 15:28 +0200, Peter Zijlstra wrote: > There's something fishy there, it looks like ->runtime can end up being > ->quota in case of overrun > 1, that shouldn't be possible, the > refresh timer should never over-fill the bucket. General confusion reigns after reading all those patches, but I think I might have been wrong there.