dump performance

[Derek]

Toomas Aas wrote:
> # cd /mnt/usr
> # dump 0af - /usr | restore xf -

> Are these speeds normal for dump, or am I missing something?

I would think not, but let's find out.  When you are running the above 
series of commands, can you instead do this:

# cd /mnt/usr
# mount
# dump 0af - /usr | restore xf - &
# iostat -c10

Give us the output of mount, and first 10 samples from iostat to see 
what kind of throughput you are getting, and how the filesystems are 
mounted.

I don't know how many recommendations I'll be able to suggest after 
that, but it will show us more what's going on.

Cheers,
Derek