Re: [Linux-decnet-user] Restore performance

[Patrick C. <pa...@ty...>]

On Wed, Apr 21, 2004 at 10:19:42AM -0300, Gustavo M. Boado wrote:
> 
> Hi. I am trying to backup an OpenVMS system to a Linux box (old story). I
> changed the RMS_DEFAULT setting as it's suggested in the documentation and both
> backup and restore worked properly, but the restore process take much longer
> than the backup (4 hours compared to 20 minutes). Any idea of what might be
> happening?

It depends on a few things, principal is whether you are pushing or pulling from
the Linux box. It's some time since I wrote the code but I distinctly remember
that the blocking was much more efficient one way than another. 

Also the send windowing in Linux is only implemented in one direction too -
though I think that only affects phase V nodes in Phase IV compatibility.

Can you tell me the commands you are doing? - and if you have any FAL options
set. often the FAL metadata can drastically improve send times because it will
block more efficiently. fal -ae is a good default to use.
-- 

patrick