From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756464Ab2JCPFu (ORCPT ); Wed, 3 Oct 2012 11:05:50 -0400 Received: from mx1.redhat.com ([209.132.183.28]:11354 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756442Ab2JCPFs convert rfc822-to-8bit (ORCPT ); Wed, 3 Oct 2012 11:05:48 -0400 From: Jeff Moyer To: =?utf-8?B?THVrw6HFoQ==?= Czerner Cc: Dave Chinner , Jens Axboe , linux-kernel@vger.kernel.org Subject: Re: [PATCH] loop: Limit the number of requests in the bio list References: <1348767205-17230-1-git-send-email-lczerner@redhat.com> <20121002195934.GA2657@devil.redhat.com> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Wed, 03 Oct 2012 11:05:44 -0400 In-Reply-To: (=?utf-8?B?Ikx1a8OhxaE=?= Czerner"'s message of "Wed, 3 Oct 2012 17:01:17 +0200 (CEST)") Message-ID: User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Lukáš Czerner writes: >> Did you look at system time? >> >> -Jeff > > Hi, none of the times showed any significant difference, there was > not any pattern suggesting a problem. Also the system time is included > in the real time, so it would show anyway I guess. Only if you're cpu bound. If you aren't, elevated system time may not increase overall runtime. Cheers, Jeff