Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932423AbbEHUWW (ORCPT ); Fri, 8 May 2015 16:22:22 -0400 Received: from mout.gmx.net ([212.227.17.22]:51424 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932079AbbEHUWV (ORCPT ); Fri, 8 May 2015 16:22:21 -0400 Message-ID: <554D1AF8.9030406@gmx.de> Date: Fri, 08 May 2015 22:22:16 +0200 From: =?UTF-8?B?VG9yYWxmIEbDtnJzdGVy?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: dsterba@suse.cz, Linux Kernel Subject: Re: periodic iowait spike References: <5545F220.1060902@gmx.de> <20150506140249.GN5099@twin.jikos.cz> In-Reply-To: <20150506140249.GN5099@twin.jikos.cz> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K0:l5cxk0sGl/n/mWPX75ug3H3q+lQWXue5eV5OKmPR4YyCU/89/kB 9ZSlTmCCG3ZwLOxGr6wLebAwI3PXt3YevvSTgTrHh3ct1IsVBWDJRX/vPDJgABJhDcYAABy pqM95ZqGjUfWVvkAAPN6nYOisnVvRYULyjyUYfEgXUNYYXo6nE2nP4yNQgUKcowD10wChND SmzIY/kptU4HDG4670veg== X-UI-Out-Filterresults: notjunk:1; Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 753 Lines: 18 On 05/06/2015 04:02 PM, David Sterba wrote: > Also, you could try to change the > commit interval (mount option 'commit') and see if the iowait spikes > change as well. I changed that option between 10 sec and 299 seconds - same picture. -- Toralf pgp key: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 0076 E94E -- "; the past is all dirty and cruel in the modern popular imagination, with the exception of the Romans, who are just cruel" Ian Mortimer, 2008, "The Time Traveller's Guide to Medieval England" -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/