Re: [MooseFS-Users] 3.0.39 - linux client, freebsd servers, seems to fail to write data

[Aleksander W. <ale...@mo...>]

Hi Joe!

First of all I wouldn't call that performance issue because it's look
like your client have problem with chunkservers communication.

Please check your firewall configuration.
Mfsclient use 9422 port to communicate with chunkservers and 9420 to
communicate with master.
Does your all moosefs components are in the same network, the same VALN?

All ports that are used in MooseFS cluster communication are from range
9419-9422

I would like to add that default block size for dd is 512 bytes, so you
will not achieve good performance not only in MooseFS but in all
distributed file systems.
Try to increase block size to something like 4k, 8k, 32k, 64k 1M and see
the results.

Can you tell as something more about your network configurations?

Best regards
Aleksander Wieliczko
Technical Support Engineer
MooseFS.com <moosefs.com>

On 14.08.2015 21:13, Joseph Love wrote:
> Hi,
>
> I was testing out moosefs (again) on FreeBSD, when I ran into what appeared to be a performance issue, which I assumed was related to the client.  So, I decided to try a linux client with my FreeBSD master & chunk servers.
> All systems are running 3.0.39, the master & chunk servers are on FreeBSD, and the client is Debian (jessie).
>
> I can mount the moosefs share on the client, it shows me existing content.  I can traverse folders, create new folders, ‘touch’ new files, but the second I try and put data into a file, (“echo blah > test.txt” or “dd if=/dev/zero of=test.dd count=1”) the client seems to just lock-up.
>
> It did work with a FreeBSD client, but again, I think there may be a performance issue, as I couldn’t seem to exceed about 140MB/s (SSDs, 10gbit ethernet, many cores, lots of memory) hence why I wanted to try a linux client.  Ultimately I don’t care to run linux clients, but I would have liked to see a comparison in performance between the two.
>
> Any ideas why L linux client doesn’t seem to like my FreeBSD master/chunk servers?
>
> -Joe
>
>
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