optisa - determine which variant instruction set is optimal to use
optisa prints which instruction_set out of the ones specified in the command will perform best on this machine. In this case, “best” is defined by the order in which instruction set names are returned by isalist(1). Possible values for instruction_set are given in isalist(7).
This command is obsolete and may be removed in a future version of Solaris. See isainfo(1) for a better way to handle instruction set extensions.
The following exit values are returned:
One of the instruction_set values you specified is printed by this command.
There is no output; that is, this machine cannot use any instruction_set that you specified with the optisa command.
See attributes(7) for descriptions of the following attributes:
optisa is preferable to uname –p or uname –m (see uname(1)) in determining which of several binary versions of a given program should be used on the given machine.