nxge tuning

Hi all, I would like to tune the nxge card as suggested by this link, but got some confusion. Can anyone advise me ?

We have

SunOS hsbc02 5.10 Generic_137137-09 sun4v sparc SUNW,Netra-CP3260

Do I have to install any patches ?

The tunning link
Networks - Siwiki

In our nxge.conf, I couldn't see this one,

soft-lso-enable = 1;
set nxge:nxge_bcopy_thresh=1024

should I add them in the end of the line?

and in etc/system

# rxdma-intr-time = 8;
# rxdma-intr-pkts = 20;

but it has been disabled, should I enable according to the link suggested ?

rxdma-intr-time=1;
rxdma-intr-pkts=8;