From: Li Wang <liwang@ubuntukylin.com>
To: Mark Nelson <mark.nelson@inktank.com>
Cc: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>,
Sage Weil <sage@inktank.com>
Subject: Re: Performance results on inline data support
Date: Tue, 01 Oct 2013 22:21:52 +0800 [thread overview]
Message-ID: <524ADA80.30700@ubuntukylin.com> (raw)
In-Reply-To: <52497109.8030206@inktank.com>
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
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>
>
next prev parent reply other threads:[~2013-10-01 14:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-30 8:34 Performance results on inline data support Li Wang
2013-09-30 12:39 ` Mark Nelson
2013-10-01 14:21 ` Li Wang [this message]
2013-10-01 14:29 ` Mark Nelson
2013-10-01 14:40 ` Li Wang
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