From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: rbd striping format v1 / v2 benchmark Date: Wed, 07 Nov 2012 21:03:43 +0100 Message-ID: <509ABE9F.5050300@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]:42540 "EHLO mail.profihost.ag" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751736Ab2KGUDs (ORCPT ); Wed, 7 Nov 2012 15:03:48 -0500 Sender: ceph-devel-owner@vger.kernel.org List-ID: To: "ceph-devel@vger.kernel.org" Hello list, i've done some benchmarks regarding striping / v1 / v2. Results: format 1: write: io=5739MB, bw=65278KB/s, iops=16319, runt= 90029msec read : io=5771MB, bw=65636KB/s, iops=16408, runt= 90030msec write: io=77224MB, bw=874044KB/s, iops=213, runt= 90473msec read : io=178840MB, bw=1983MB/s, iops=495, runt= 90168msec format 2: --stripe-count 8 --stripe-unit 524288 -s 4194304 write: io=5377MB, bw=61147KB/s, iops=15286, runt= 90041msec read : io=5332MB, bw=60617KB/s, iops=15154, runt= 90067msec write: io=75136MB, bw=849285KB/s, iops=207, runt= 90593msec read : io=160292MB, bw=1777MB/s, iops=444, runt= 90226msec --stripe-count 4 --stripe-unit 1048576 -s 4194304 write: io=5301MB, bw=60281KB/s, iops=15070, runt= 90046msec read : io=5367MB, bw=61031KB/s, iops=15257, runt= 90057msec write: io=74448MB, bw=840293KB/s, iops=205, runt= 90724msec read : io=170616MB, bw=1891MB/s, iops=472, runt= 90227msec So it seems right now that striping doesn't improve performance. Greets, Stefan