openstack team mailing list archive

[Anne Gentle <anne@xxxxxxxxxxxxx>]

I don't know if it will confirm or correlate with your findings, but
do take a look at this blog post with benchmarks in one of the last
sections:

http://www.sebastien-han.fr/blog/2012/06/10/introducing-ceph-to-openstack/

I'm trying to determine what parts should go into the OpenStack
documentation, please let me know if the post is useful to you in your
setting and what sections are most valuable.
Thanks,
Anne


On Tue, Jul 24, 2012 at 6:08 PM, Josh Durgin <josh.durgin@xxxxxxxxxxx> wrote:
> On 07/23/2012 08:24 PM, Jonathan Proulx wrote:
>>
>> Hi All,
>>
>> I've been looking at Ceph as a storage back end.  I'm running a
>> research cluster and while people need to use it and want it 24x7 I
>> don't need as many nines as a commercial customer facing service does
>> so I think I'm OK with the current maturity level as far as that goes,
>> but I have less of a sense of how far along performance is.
>>
>> My OpenStack deployment is 768 cores across 64 physical hosts which
>> I'd like to double in the next 12 months.  What it's used for is
>> widely varying and hard to classify some uses are hundreds of tiny
>> nodes others are looking to monopolize the biggest physical system
>> they can get.  I think most really heavy IO currently goes to our NAS
>> servers rather than through nova-volumes but that could change.
>>
>> Anyone using ceph at that scale (or preferably larger)?  Does it keep
>> up if you keep throwing hardware at it?  My proof of concept ceph
>> cluster on crappy salvaged hardware has proved the concept to me but
>> has (unsurprisingly) crappy salvaged performance. Trying to get a
>> sense of what performance expectations I should have given decent
>> hardware before I decide if I should buy decent hardware for it...
>>
>> Thanks,
>> -Jon
>
>
> Hi Jon,
>
> You might be interested in Jim Schutt's numbers on better hardware:
>
> http://comments.gmane.org/gmane.comp.file-systems.ceph.devel/7487
>
> You'll probably get more response on the ceph mailing list though.
>
> Josh
>
>
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