From mboxrd@z Thu Jan 1 00:00:00 1970 From: Li Wang Subject: Re: Performance results on inline data support Date: Tue, 01 Oct 2013 22:21:52 +0800 Message-ID: <524ADA80.30700@ubuntukylin.com> References: <5249377C.8030003@ubuntukylin.com> <52497109.8030206@inktank.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from m199-177.yeah.net ([123.58.177.199]:45842 "EHLO m199-177.yeah.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753422Ab3JAOVz (ORCPT ); Tue, 1 Oct 2013 10:21:55 -0400 In-Reply-To: <52497109.8030206@inktank.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Mark Nelson Cc: "ceph-devel@vger.kernel.org" , Sage Weil Currently it is 4KB, but we will implement it as a tunable parameter. Cheers, Li Wang On 09/30/2013 08:39 PM, Mark Nelson wrote: > 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 > >