RE: SMP kernels and top output

"Ross S. W. Walker" <rwalker@xxxxxxxxxxxxx> · Mon, 26 Mar 2007 10:37:47 -0400

Title: SMP kernels and top output

Press the number '1' when in top.

-Ross

  From: centos-bounces@xxxxxxxxxx 
  [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Bisbal, 
  Prentice
Sent: Monday, March 26, 2007 10:28 AM
To: 
  centos@xxxxxxxxxx
Subject:  SMP kernels and top 
  output

  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? 

  -- 
Prentice 

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