From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751878Ab1I0NIt (ORCPT ); Tue, 27 Sep 2011 09:08:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:22491 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751003Ab1I0NIs (ORCPT ); Tue, 27 Sep 2011 09:08:48 -0400 Date: Tue, 27 Sep 2011 09:08:43 -0400 From: Vivek Goyal To: Corrado Zoccolo Cc: Shaohua Li , lkml , Jens Axboe , Maxim Patlasov Subject: Re: [patch]cfq-iosched: delete deep seeky queue idle logic Message-ID: <20110927130843.GA24673@redhat.com> References: <1316142577.29510.130.camel@sli10-conroe> <1316155239.29510.148.camel@sli10-conroe> <1316603780.2001.12.camel@shli-laptop> <20110923132441.GA10289@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Sep 25, 2011 at 09:34:16AM +0200, Corrado Zoccolo wrote: [..] > > > > Anyway, what's wrong with the idea I suggested in other mail of expiring > > a sync-noidle queue afer few reuqest dispatches so that it does not > > starve other sync-noidle queues. > I don't know the current state of the code. Are the noidle queues > sorted in some tree, by sector number? > If that is the case, then even an expired queue could still be in > front of the tree. I am not aware of any queue sorting based on sector number on sync-noidle tree. So we should just be able to do round robin. Thanks Vivek