Please confirm: top(1) cpu time broken on FreeBSD 6.1 (RELEASE/STABLE) SMP ?

[Martin Blapp]

Hi,

Ok, seems to be a HTT issue on a untuned system.

On two boxes I get with 'sysctl -a | grep smp | grep kern.smp.cpus'
kern.smp.cpus: 4

Here I see CPU-IDs 0 and 2 in top. No other CPUs seem to be
used. Here I get the broken CPU usage.

And yes, seeting hyperthreading_allowed=1 corrects the top usage.

On two other boxes where it works I get 'sysctl -a | grep smp | grep 
kern.smp.cpus' kern.smp.cpus: 2

Here I see CPU-ID's 0 and 1 in top. Here everything works as it should.

Martin

Martin Blapp, <mb at imp.ch> <mbr at FreeBSD.org>
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