Xen devel - Mar 2007 - How can I determine a Xen server''s overall CPU utilization?

Hello,

I would like to determine overall CPU utilization on a server that''s
running xen, and log this information to a file - such as sar can do
when run in a non-xen environment. I understand that xenmon shows
utilization for each domain, but how can I massage this data to get an
overall host server utilization? I''m looking for a single value that
describes how much of the host server is being used by all the domains
including dom0.

If I run xenmon in interactive mode, it displays, for a single CPU, a
number of rows where the CPU utilization adds up to 100%. If I add up
the "Gotten" lines for all domains but Idle, I can get non-idle
utilization for a single cpu... and if I press "c" I can cycle through
each CPU. Is there a way to get this information saved into a single
file? I understand that the -n option produces file output, but this is
organized by domain, not cpu.

Or is there another tool that might provide the information I''m looking
for?

Thanks

brian carb - unisys corporation - malvern, pa

 



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