Robert,
    Have you looked in the bottom right corner of the display to see
what guest might be using the most CPU ? Or Option 21 from the main
PerfKit menu ?
                             Bob 

________________________________

From: The IBM z/VM Operating System [mailto:[email protected]] On
Behalf Of RPN01
Sent: Tuesday, March 30, 2010 2:46 PM
To: [email protected]
Subject: After getting PerfKit working...


We can now see what is eating our system, and it turns out that it's
z/VM...

CPU Load                                           Vector Facility
Status or  
PROC   TYPE   %CPU    %CP   %EMU   %WT   %SYS   %SP   %SIC   %LOGLD
%VTOT   %VEMU    REST   ded. User 
P00  IFL    99   99    1   1   94   0   89    100     ..    ..   ...
Master    
 P01  IFL    40    3   37  60    1   0   88     40     ..    ..   ...
Alternate 
   
We're grinding CPU 0 at 99%, and it's all CP time.

Any insightful suggestions?

-- 
Robert P. Nix          Mayo Foundation        .~.
RO-OE-5-55             200 First Street SW    /V\
507-284-0844           Rochester, MN 55905   /( )\
-----                                        ^^-^^
"In theory, theory and practice are the same, but
 in practice, theory and practice are different."


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