Re: [Moosefs-users] MFS bottleneck?

[Mike <isp...@gm...>]

On 11-10-24 09:25 AM, Robert Sandilands wrote:
> There are a few bottlenecks in MFS.
>
> Most of these are caused by too many connections to a single daemon. 
> mfsmount seems to peform badly if you make more than 5 - 10 simultaneous 
> reads or writes per mount. mfschunkserver also seems to perform badly if 
> you make more than around 10 simultaneous connections per instance. 
> mfsmaster seems to cause some problems if the load on the system becomes 
> too high.
>
> 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?

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

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