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From: Robert Watson <rwatson@FreeBSD.org>
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On Sat, 16 Apr 2005, Dag-Erling Sm=F8rgrav wrote:

> Robert Watson <rwatson@FreeBSD.org> writes:
>> The 'C' column is quite useful when tuning SMP systems, and something
>> I frequently look at when debugging performance issues in 5.x and
>> 6.x.
>
> The C column is pointless when you're not showing individual threads,=20
> since different threads in the same process might be running=20
> simultaneously on different CPUs.

With many current applications, you get processes, in which case there's=20
still a benefit.  I agree that there's ambiguity in the threaded but=20
non-H case.  In the work I'm doing, I'm primarily interested in the 'C'=20
column in the context of "-S", because I want to see where the kernel and=
=20
user processes land -- i.e., where the ithreads and netisr end up, and how=
=20
well they load balance.

Robert N M Watson
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