I am trying to retrieve information about de the CPU Health, (%Idle, %User,

The program that try to get these values is QALoad.

The problem is that some machines with Solaris 2.8 don't answer to the CPU
Status request, other request (Ethernet, IP, UDP) counters works fine.

I've others machines with Solaris 2.9, in this machines works fine all
request CPU and not CPU.

I don't know why some machines with 2.8 can answer to the CPU Status request
and others don't.

What could be the problem ?

What is the brand of MIB that have the CPU Status counters ?

Thanks for advance