[Gluster-users] Major performance problem with WRF

[Anand Avati]

>> WRF is not the only thing running on the cluster.
>>
>> Direct I/O of 1GB takes 2.7 seconds.  NFS takes 17 seconds.  Gluster takes
>> 100 seconds.
>>
>
> Pulled those translators out and it reduced the glusterfs time to 77
> seconds.  A significant improvement, but still far behind NFS.  Any other
> suggestions?

Do you know what block size the operations are performed? Is there a
way to tune (increase) it? Fuse has a high overhead for small block
sizes (< 4KB). Alternately, you can try to LD_PRELOAD the booster
module to your application before starting it which bypasses fuse for
read/write calls.

avati