From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Nelson Subject: Re: Performance results on inline data support Date: Mon, 30 Sep 2013 07:39:37 -0500 Message-ID: <52497109.8030206@inktank.com> References: <5249377C.8030003@ubuntukylin.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ie0-f175.google.com ([209.85.223.175]:57398 "EHLO mail-ie0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754044Ab3I3Mjf (ORCPT ); Mon, 30 Sep 2013 08:39:35 -0400 Received: by mail-ie0-f175.google.com with SMTP id e14so10141489iej.34 for ; Mon, 30 Sep 2013 05:39:35 -0700 (PDT) In-Reply-To: <5249377C.8030003@ubuntukylin.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Li Wang Cc: "ceph-devel@vger.kernel.org" , Sage Weil On 09/30/2013 03:34 AM, Li Wang wrote: > Hi, > We did a performance test on inline data support, the Ceph cluster is > composed of 1 MDS, 1 MON, 6 OSD on a HPC cluster. The program is simple, > there are 1000 - 3000 files with each being 1KB. The program repeated > the following processes on each file: open(), read(), close(). The total > time is measured with/without inline data support. The results are as > follows (seconds), > > #files without with > 1000 17.3674 8.7186 > 2000 35.4848 17.7646 > 3000 53.2164 26.4374 Excellent job! Looks like this could make a big difference for certain workloads. How much data can it store before it switches away from inlining the data? > > Cheers, > Li Wang > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html