From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: Re: poor OSD performance using kernel 3.4 Date: Tue, 29 May 2012 23:34:18 +0200 Message-ID: <4FC540DA.2050601@profihost.ag> References: <5970d59f-9531-4f60-8600-3e1268824c83@mailpro> <4FC49B12.8020004@profihost.ag> <4FC4D1A8.1080001@univ-nantes.fr> <4FC4E0A9.8010008@profihost.ag> <4FC50C4A.4090101@inktank.com> <4FC53AC4.5020600@profihost.ag> <4FC54020.8040603@univ-nantes.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.profihost.ag ([85.158.179.208]:40207 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755840Ab2E2VeU (ORCPT ); Tue, 29 May 2012 17:34:20 -0400 In-Reply-To: <4FC54020.8040603@univ-nantes.fr> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Yann Dupont Cc: Mark Nelson , ceph-devel@vger.kernel.org Am 29.05.2012 23:31, schrieb Yann Dupont: > on the contrary, pool data is jumping up & down, no matter how much > thread involved :) > > Maybe this is because journal is too tight ? Or because 2 of the 8 nodes > have slower disks ? Can you try with 3.0.X? I would be really interested what happens in this case. Stefan