[Pvfs2-users] performance problem

[Robert Latham]

On Tue, May 13, 2008 at 07:37:34PM +0200, Emmanuel Florac wrote:

> However the performance is abysmal : the network thruput between the
> nodes is 8MB/s while copying! the total cluster write performance
> (cp from local disk to pvfs storage) is 17 MB/s.... What can be going so
> wrong? Any hint would be appreciated.

How are you copying?  The version of coreutils in debian etch
(5.97-5.3) will use a very tiny blocksize in some situations.  Is
pvfs2-cp any better?  

==rob

-- 
Rob Latham
Mathematics and Computer Science Division    A215 0178 EA2D B059 8CDF
Argonne National Lab, IL USA                 B29D F333 664A 4280 315B