[Gluster-users] glusterfs performance issues

[Dennis Jacobfeuerborn]

On 01/07/2013 06:11 PM, Jeff Darcy wrote:
> On 01/07/2013 12:03 PM, Dennis Jacobfeuerborn wrote:
>> The "gm convert" processes make almost no progress even though on a regular
>> filesystem each call takes only a fraction of a second.
> 
> Can you run gm_convert under strace?  That will give us a more accurate
> idea of what kind of I/O it's generating.  I recommend both -t and -T to
> get timing information as well.  Also, it never hurts to file a bug so
> we can track/prioritize/etc.  Thanks.
> 
> https://bugzilla.redhat.com/enter_bug.cgi?product=GlusterFS

Thanks for the strace hint. As it turned out the gm convert call was issued
on the filename with a "[0]" appended which apparently led gm to stat() all
(!) files in the directory.

While this particular problem isn't really a glusterfs problem is there a
way to improve the stat() performance in general?

Regards,
  Dennis