More than 32 CPUs under 8.4-P

Tijl Coosemans tijl at
Sun May 19 09:48:25 UTC 2013

On 2013-05-18 19:13, Dennis Glatting wrote:
> I have a 4x16=64 core server running FreeBSD 8.4-P but only two of the
> CPUs (2x16=32) are enabled. Enabling the other 32 isn't as simple as
> changing MAXCPU in param.h (apparently) and recompiling.
> What do I need to do to enable the other 32 cores?

Try FreeBSD 9.x. MAXCPU is 64 there.

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