From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: Re: improve speed with auth supported=none Date: Tue, 13 Nov 2012 08:52:45 +0100 Message-ID: <50A1FC4D.8010000@profihost.ag> References: <50A117B9.4060804@profihost.ag> <50A170BF.5030402@profihost.ag> <50A1F9F8.4030808@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]:33847 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753134Ab2KMHwp (ORCPT ); Tue, 13 Nov 2012 02:52:45 -0500 In-Reply-To: <50A1F9F8.4030808@inktank.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Josh Durgin Cc: =?ISO-8859-1?Q?S=E9bastien_Han?= , "ceph-devel@vger.kernel.org" , Alexandre DERUMIER Am 13.11.2012 08:42, schrieb Josh Durgin: > On 11/12/2012 01:57 PM, Stefan Priebe wrote: >> Thanks, >> >> this gives another burst for iops. I'm now at 23.000 iops ;-) So for >> random 4k iops ceph auth and especially the logging is a lot of overhead. > > How much difference did disabling auth make vs only disabling logging? disable debug logging: 3000 iops disable auth logging: 2000 iops Is anybody in the ceph team also interested in a call graph of kvm when VM is doing random 4k write io? Greets Stefan