Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756853AbZCZMWj (ORCPT ); Thu, 26 Mar 2009 08:22:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752764AbZCZMWb (ORCPT ); Thu, 26 Mar 2009 08:22:31 -0400 Received: from rv-out-0506.google.com ([209.85.198.234]:55629 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752108AbZCZMWa (ORCPT ); Thu, 26 Mar 2009 08:22:30 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=kxvI/JhxPU0jBiM7EN+gu59nSUN3xS/59gckdHof/kRqeZ8jfJPYfSswsFQZZV5tsR Djob1jc1ktmtKJMGcsZM9HUQ5+8dtKW7sqrGhc+cEiDjU3BkJvnr+VcLEhTxLURF7EIN amr5TTEJKIMYdG1twdSorhKTgM8gx8tc/XN3k= MIME-Version: 1.0 In-Reply-To: <20090326090630.GA9369@elte.hu> References: <20090324103111.GA26691@elte.hu> <20090325123744.GK23439@duck.suse.cz> <20090325150041.GM32307@mit.edu> <20090325185824.GO32307@mit.edu> <20090325215137.GQ32307@mit.edu> <20090325235041.GA11024@duck.suse.cz> <20090326090630.GA9369@elte.hu> Date: Thu, 26 Mar 2009 14:22:27 +0200 X-Google-Sender-Auth: df0818fb79901be1 Message-ID: <84144f020903260522r78240128j3c7d4691b76b7257@mail.gmail.com> Subject: Re: ext3 IO latency measurements (was: Linux 2.6.29) From: Pekka Enberg To: Ingo Molnar Cc: Jan Kara , Linus Torvalds , Theodore Tso , Andrew Morton , Alan Cox , Arjan van de Ven , Peter Zijlstra , Nick Piggin , Jens Axboe , David Rees , Jesper Krogh , Linux Kernel Mailing List , Oleg Nesterov , Roland McGrath Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 804 Lines: 19 Hi Ingo, On Thu, Mar 26, 2009 at 11:06 AM, Ingo Molnar wrote: > Btw., i had this test going on that box while i wrote some simple > scripts in Vim - and it was a horrible experience. The worst wait > was well above one minute - Vim just hung there indefinitely. Not > even Ctrl-Z was possible. I captured one such wait, it was hanging > right here: Just a data point: I've seen this exact same time for a long time (1-2 years) too even with stock distribution kernels. Never bothered to investigate it though. Pekka -- 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/