From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Re: massive rbd speed decrease with latest git master Date: Mon, 05 Nov 2012 11:48:23 +0100 Message-ID: <50979977.2090006@profihost.ag> References: <50979779.3040300@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.profihost.ag ([85.158.179.208]:54643 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754063Ab2KEKs0 (ORCPT ); Mon, 5 Nov 2012 05:48:26 -0500 In-Reply-To: <50979779.3040300@profihost.ag> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: "ceph-devel@vger.kernel.org" Cc: alexandre DERUMIER Am 05.11.2012 11:39, schrieb Stefan Priebe - Profihost AG: > Hello list, > > while updating ceph to the latest master i noticed this: > > Commit a01b112d71a0b6a1bb206d53867d13536d17bbf6: > rand. 4k WRITE: 3000 iop/s > > Commit 72a710ac47355ae3ca1d055be1496c91956d549d: > rand. 4k WRITE: 900 iop/s > > Same for rand 4k read - haven't tested sequential stuff. Now i'm strangely seeing this slow performance with old commit too. Pretty strange. So please ignore my mail until i made further tests. Stefan