Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755883Ab3E0BzN (ORCPT ); Sun, 26 May 2013 21:55:13 -0400 Received: from h1446028.stratoserver.net ([85.214.92.142]:59464 "EHLO mail.ahsoftware.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755718Ab3E0BzM (ORCPT ); Sun, 26 May 2013 21:55:12 -0400 Message-ID: <51A2BCE6.806@ahsoftware.de> Date: Mon, 27 May 2013 03:54:46 +0200 From: Alexander Holler User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130421 Thunderbird/17.0.5 MIME-Version: 1.0 To: Fredrik Tolf CC: linux-kernel@vger.kernel.org Subject: Re: Weird disk idling References: In-Reply-To: Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 979 Lines: 29 Am 26.05.2013 07:29, schrieb Fredrik Tolf: > I'm sure you all know what the various fields are (except the first, Hmm, I had to look at Documentation/block/stat.txt. > which is just a timestamp), so as you can see, there are 135 requests in > the queue, but no reads or writes happen, in this case, for at least 800 > ms. > > Is this behavior normal and expected, or is there something wrong here? > In the latter case, is it my hardware that is failing somehow, or can > there be some software weirdness that can be tweaked away or bugfixed? I would say thats how caches do work. You might have a look at sysctl vm which shows a lot of the knobs you can turn to change some of the aspects you see. Regards, Alexander Holler -- 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/