Does Solaris x86 support multiple processors?

Does Solaris x86 support multiple processors?

Yes. Solaris x86 automatically detects multiple processors.
The limit is at least 8 according to the HCL and by observation.
The theoretical kernel limit (_ncp) is 21.
Due to bus conflicts, there's diminishing returns as you increase the
number of procs.
psrinfo(1M) will print the status of your processors,
mpstat(1M) will report the CPU usages, and
psradm(1M) can be used to take processors offline.


Some people have had problems with Solaris "seeing" the extra processors,
with at least one type of motherboard (Compaq?).
They had success with going into the BIOS utility and setting OS type to
"other" for "Solaris".
With most motherboards no special BIOS settings are required.


[Thanks to John Groenveld, Juergen Keil, Bob Palowoda, Bruce Alder,
and Michael VanLoon]






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