From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: Re: poor OSD performance using kernel 3.4 Date: Wed, 30 May 2012 16:53:08 +0200 Message-ID: <4FC63454.3070007@profihost.ag> References: <4FBE415E.8030702@profihost.ag> <4FC54CDB.1000506@inktank.com> <4FC5BF27.5060704@profihost.ag> <4FC5C941.6010105@profihost.ag> <4FC5FEC1.90103@profihost.ag> <4FC60FC8.207@inktank.com> <4FC61596.3050703@profihost.ag> <4FC61E69.2030408@profihost.ag> <4FC63381.6090300@inktank.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.profihost.ag ([85.158.179.208]:47734 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754679Ab2E3OxJ (ORCPT ); Wed, 30 May 2012 10:53:09 -0400 In-Reply-To: <4FC63381.6090300@inktank.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Mark Nelson Cc: Stefan Majer , "ceph-devel@vger.kernel.org" Am 30.05.2012 16:49, schrieb Mark Nelson: > On 05/30/2012 08:38 AM, Stefan Majer wrote: >> No i dont think so either, this was just a example. Maybe it is totaly >> different. > > You could try setting up a pool with a replication level of 1 and see > how that does. It will be faster in any event, but it would be > interesting to see how much faster. is there an easier way than modifying the crush map? PS: i also tested noop scheduler - same result. Stefan