[PVFS-users] PVFS + Rockscluster + dd = Cannot allocate memory

[Robert Latham]

On Tue, Sep 28, 2004 at 04:00:43PM +0200, jerome.borowiak at c-s.fr wrote:
> Found !
> 
> Here there is an answer found by a colleague...
> 
> Modify the /etc/modules.conf as :
> 
> options pvfs buffer=dynamic
> (default options is : options pvfs buffer=mapped)
> 
> And now the related question is : 
> 
> Does exist any consequence ???

About 4 years ago I measured VFS performance with static, mapped and
dynamic buffer modes.  Those pages were hosted on my old employers
site and I no longer have access to them, but they showed 'dynamic'
has a slight performance edge over the other two.  In some
configurations, 'dynamic' does not work well with highmem enabled.

Glad you figured out the problem!
==rob

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