From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Re: poor OSD performance using kernel 3.4 Date: Wed, 30 May 2012 13:04:33 +0200 Message-ID: <4FC5FEC1.90103@profihost.ag> References: <4FBE415E.8030702@profihost.ag> <4FC54CDB.1000506@inktank.com> <4FC5BF27.5060704@profihost.ag> <4FC5C941.6010105@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail.profihost.ag ([85.158.179.208]:50852 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752573Ab2E3LE3 (ORCPT ); Wed, 30 May 2012 07:04:29 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Stefan Majer Cc: Mark Nelson , "ceph-devel@vger.kernel.org" Am 30.05.2012 09:19, schrieb Stefan Majer: > Hi, > > ok, so your replication level is 2 and you have 2*1GB/sec right ? Generally yes - but for this new test it was just 1*1GB/s (see below). > do you have a iostat -x 3 output and or a dstat from all effected > machines during your rados bench runs as well ? As the output looks exactly the same on all OSDs here is it from ONE osd: Kernel 3.4: http://pastebin.com/raw.php?i=sV9vKsWy Kernel 3.0: http://pastebin.com/raw.php?i=eafjpPpK Stefan