netsnmp on solaris8 sparc

hello,

I installed netsnmp 5.6 on solaris 8 (sparc).
now I want to have cpu, memory and disk used, for this when i execute:

snmpwalk -v1 -c public localhost memory

it displays me:

End of mib

please tel me how to do, to have this information (cpu, memory and disk used).

thank you