Re: [Moosefs-users] architecture question

[Elliot F. <efi...@gm...>]

On Thu, Jul 21, 2011 at 8:12 PM, Robert Sandilands
<rsa...@ne...> wrote:
> The only time that many spindles will be remotely useful on 1 controller
> is if you are doing a large amount of small random read/write accesses.
> For anything else you are more likely to saturate the bus connecting the
> machine to the controller/expander.

I appreciate you taking the time to answer.  What you're saying here
is a common sense answer, but it doesn't really answer my specific
question.  Most likely because I didn't state it clear enough.  So
here is my question in a (hopefully) more clear fashion:

Is MooseFS sufficiently multithreaded/multi-process to be able to make
use of lots of spindles to handle lots of IOPS...  To the point of
saturating the 6Gbps SAS2 link?  This obviously implies a 10G ethernet
link to the chunkserver.

Also asked another way:  does having more cores == more performance?
i.e. Can MooseFS take advantage of multiple cores?  to what extent?

I ask to what extent because a multithreaded/multi-process daemon can
get hung up with lock contention.

TIA
Elliot