On Thu, 9 Nov 2000, Kevin M. Myer wrote:
> On Wed, 8 Nov 2000, Chris Karakas wrote:
>
> > When I first used AMANDA, I used it without compression. Then I upgraded
> > the tape drivers (which used an inherend "block" compression,
> > transparent to the user), the new ones did not support any inherent
> > compression, so I had to use the usual "client" compression. I was
> > amazed to see how much longer it took. Where AMANDA used to take 2-3
> > hours to finish, now it took 6-8!
>
> Thats all fine and good but my AMANDA server backs up 13 servers. 3 run
> Solaris, 8 run Linux and 1 runs OS X Server. I can do full backups of all
> the servers in less than three hours, with client-side compression, with
> the exception of the OS X Server. It takes over 8 hours to compress and
> backup 400 Mb of data on that machine (a 400MHz G4 machine with a Gig of
> RAM). So its not merely an issue of gzip compression adding time to the
> backups. gzip is just really, really slow when used with AMANDA under Mac
> OS X Server. Command line issued tar/gzip pipes seem to work reasonably
> fast on the OS X Server.
>
> Its not a big deal - I've moved all compression to the backup server at
> this point, but it is an oddity I was hoping to figure out.
Have you tried compress client fast yet or are you still doing client
best?
-Mitch
