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 15:19:37 +0200 Message-ID: <4FC61E69.2030408@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> 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]:36720 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753700Ab2E3NTd (ORCPT ); Wed, 30 May 2012 09:19:33 -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 15:11, schrieb Stefan Majer: > Hi, > > I dont think seeks are a problem, because Stefan would see huge disk > util percentage with iostat which is not the case. > I guess the problem with 3.2 and greater is somewhere else for example > in a network card driver which changed dramaticalle or something like that. Can't beliebe that the e1000 driver is now so buggy - although iperf still shows me around 950MBit/s no matter if 3.0, 3.2, ... > Is it possible to to a git bisect, on that machine and do some runs, > otherwise i see no point how to identify this. I'm not familiar with git bisect so i can't answer this question Stefan