[CentOS] SMP kernels and top output

Mon Mar 26 14:28:25 UTC 2007
Bisbal, Prentice <PBisbal at LexPharma.com>

Hi, everyone. I'm new to the list. This question may have come up
before, but I couldn't find an answer to it by searching the centos
website. Could be I was using bad keywords for my search.  

I have 3 HP xw9300 workstations (dual AMD Opteron 64-bit processors)
that I'm upgrading from RHEL3WS to CentOS 4.4. I've upgraded two
already, with one left to go. On the system with RHEL3WS, 'top' shows
statistics for each processor and what processor # each process is
running on.

On the systems running CentOS 4.4, the output of 'top' looks like that
of a uniprocessors system - there are no statistics for each processor
and it doesn't show which processor each process is running on. However,
/proc/cpuinfo shows the two processors. 

Does this mean that my OS isn't seeing the second processor, or has the
behavior of top changed between the two OS versions? Is there any way
that I Can verify that both processors are being used? 


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