pstatectl.1m (2010 09)

pstatectl(1M)

(Itanium(R)-based Systems Only)

pstatectl(1M)

If HP-UX does not have control over processor performance states, the

pstatectl command will still

work normally. However, any changes made to P-state modes will have no effect until HP-UX regains

control. The

pstatectl status command will report whether HP-UX currently has control over

P-states.

RETURN VALUE

pstatectl returns the following values:

0 Successful completion.

1 Command failed.

DIAGNOSTICS

P-states are not supported on this system

Make sure that the system has Itanium(R) 2 9100 series or later processors, and that the installed

system ﬁrmware supports P-states.

EXAMPLES

To enable dynamic P-states on the system:

pstatectl enable

To disable dynamic P-states on the system (all processors will be in maximum performance mode):

pstatectl disable

pstatectl static P0

To restrict the system to P0 and P1 only:

pstatectl dynamic P0 P1

DEPENDENCIES

Processor performance states require Itanium(R) 2 9100 series processors or later models. Some systems

require a ﬁrmware update to use processor performance states.

AUTHOR

pstatectl was developed by HP.