I have an application that monitors the CPU usage of
specific
processes on a production server via .NET
PerformanceCounter[s]. The
2 processes being monitored are the ASP.NET worker process
and MySQL.
The production machine has 2 duo-core processors (4 logical
cores).
My understanding is; the calculated value, which I am
getting from the
PerformanceCounter object, is the SUM of the process's cpu
usage on
EACH individual core (as multithreaded apps consume cycles
on the
multiple cores)... which would mean I could get a value from
0 - 400
(on this particular machine.)
For some reason, I never get a value greater than 100 (25%)
-- even
when the process cpu usage is listed as 40% in Task Manager
[locally]
on the server! I am pretty sure that I should be reading a
value of
160, from the PerformanceCounter object, when cpu usage for
the
process is 40%.
Can anyone verify that my thinking is correct, or if I am
misunderstanding something??
Does the PerformanceCounter's calculated value have a
"cap" of 100%??
Thanks, in advance!
nlleach
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