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optisa(1)                        User Commands                       optisa(1)



NAME
       optisa - determine which variant instruction set is optimal to use

SYNOPSIS
       optisa instruction_set...

DESCRIPTION
       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   isal-
       ist(5).

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:


       tab()     allbox;     cw(2.750000i)|    cw(2.750000i)    lw(2.750000i)|
       lw(2.750000i).  ATTRIBUTE TYPEATTRIBUTE VALUE AvailabilitySUNWcsu


EXIT STATUS
       The following exit values are returned:

       0        One of the  instruction_set values you specified is printed by
                this command.



       1        There  is  no  output;  that  is,  this machine cannot use any
                instruction_set that you specified with the optisa command.



SEE ALSO
       isalist(1), uname(1), attributes(5), isalist(5)

NOTES
       optisa is preferable to  uname -p or  uname -m (see uname(1)) in deter-
       mining  which  of several binary versions of a given program  should be
       used on the given machine.



SunOS 5.10                        25 Jul 1997                        optisa(1)