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Date: Sun, 19 Dec 2004 11:17:14 +0530
From: Joseph Koshy <joseph.koshy@gmail.com>
To: Attila Nagy <bra@fsn.hu>
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cc: hackers@freebsd.org
Subject: Re: Virtual CPU or not?
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> I would like to find a method which determines the current number of
> active CPUs.

> Is there a better method than checking that sysctl and divide the
> hw.ncpu by two if set?

You are probably looking for:

   min(number of '0' bits in machdep.hlt_cpus, hw.ncpu)