[OpenIndiana-discuss] Is this kind of nfs speed just tiny bit outrageous?

[Harry Putnam]

Server OS: OI 115_a9
client OS: Gentoo linux (up to date)

On client:
I recently decided I'd like to write rsnapshot (using rsync) backups
to an nfs mounted zfs share on OI nfs server.

The first trial seem pretty outrageous in terms of time taken to
complete.

I'm talking quite small amount of data being written (1.3 GB) to
mounted nfs share.

Here is what `time rsnapshot [...]' command shows:

 real    314m10.421s
 user    0m0.454s
 sys     3m52.071s

There must be something really wrong in this setup somewhere.  Or is
just NOT a good way to write to a solaris nfs share?

on Server (OI 151_a9):

zfs get sharenfs p0/rrsnap/gv

NAME          PROPERTY  VALUE                                    SOURCE
p0/rrsnap/gv  sharenfs  rw=@192.168.0.0/24,root=@192.168.0.0/24  inherited from p0/rrsnap

(It has root rw for client)

-------       -------       ---=---       -------       -------

on Client (Gentoo linux):

>From /etc/fstab (on Gentoo Linux) showing the basic share mount

 2x.local.lan:/rrsnap/gv   /nfs/bk   nfs4   defaults    0     0

-------       -------       ---=---       -------       -------

What else can I post that might help someone make some educated
guesses at what might be the cause of such massive sloth, writing to
and nfs share.