From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe - Profihost AG Subject: Re: slow fio random read benchmark, need help Date: Thu, 01 Nov 2012 09:08:03 +0100 Message-ID: <50922DE3.9000903@profihost.ag> References: <0cc4e4a7-5f71-4579-8265-f97dc5cba341@mailpro> <24E144B8C0207547AD09C467A8259F7557707A07@lisa.maurer-it.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.profihost.ag ([85.158.179.208]:60512 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756486Ab2KAIIL (ORCPT ); Thu, 1 Nov 2012 04:08:11 -0400 In-Reply-To: <24E144B8C0207547AD09C467A8259F7557707A07@lisa.maurer-it.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Dietmar Maurer Cc: Alexandre DERUMIER , Marcus Sorensen , Sage Weil , ceph-devel Am 01.11.2012 08:38, schrieb Dietmar Maurer: > I do not really understand that network latency argument. > If one can get 40K iops with iSCSI, why can't I get the same with rados/ceph? > Note: network latency is the same in both cases > What do I miss? Good question. Also i've seen 20k iops on ceph with 10GBE but i'm able to get 100.000 iops via iSCSI. Stefan