Number of CPUs on my Sun Server

Question

I am a database administrator that is new to Solaris.  My customer is still on solaris 9.  I am trying to find out how many CPUs are available in this server.

Can some one help me with the command to get the number of CPU installed in the sun server ?

Answer 1

Sun systems are not that straight forward when it comes to listing out the number of processors or cores or threads they have. Lets start with the basics.

Basic command is psrinfo -v.  In the later releases of solaris 9 an option p was introduced to help you distinguish between physical cpu and multiple cores.  Assuming that -p works for your patch level, lets issue this command.  This gets a lot more confusing in solaris 10, but since you are asking solaris 9, I will not get into that.. lets use the command below

>> psrinfo -pv

In addition to the above, you can also use prtdiag to get the information about your system.  you can man that command to get more info, but running it with the -v flag should give you most of the information needed.

>> prtdiag -v

I dont have a readily available system to run these commands and explain the output, hope that some one else on this forum can do the same.