Re: [Moosefs-users] MFS bottleneck?

[Robert S. <rsa...@ne...>]

On Oct 31, 2011, at 11:24 PM, Mike <isp...@gm...> wrote:

> On 11-10-24 09:25 AM, Robert Sandilands wrote:
>> There are a few bottlenecks in MFS.
>> 
>> In general MFS performs best with a high number of mfsmount's, a high 
>> number of mfschunkservers and a dedicated machine running mfsmaster.
> Ok, let's suppose I have a collection of PC hardware with 4 effective
> CPU cores per machine running as chunkservers. Will I get better
> performance running a number of chunkserver processes, each handling a
> subset of disks on the machine?
> 

Yes, depending on the availability of RAM.

> If so, will the best number of chunkservers be proportional to the
> number of CPU cores, or the number of disk spindles?
> 

Spindles. My guess is around 10 spindles per instance.

> If I can come up with some spare hardware I may test this myself.
> 
>