CounterSample & nextSample

microsoft.public.dotnet.framework

24 Mar 2006 1:56 PM

Joe K

I need to produce the 5 minute average CPU utilization for a system (the
average utilization over a 5 minute period). I found the below article that
seems to do a reasonably complete job of explaining the differences between
raw, calculated and sampled performance data.

http://msdn2.microsoft.com/en-us/library/xb29hack.aspx

CPU utilization is of type Timer100NsInverse. So here is my question: to
get the most accurate 5 minute average of CPU utilization, should I be
taking a sample at 0 minutes, another sample at 5 minutes, and then
calculate the results (see below code for an example)?

Advice would be appreciated. Thanks in advance.

Joe

// 1st sample
counter = new PerformanceCounter("Processor", "% Processor Time", "_Total",
"192.168.130.9");
sample1 = counter.NextSample();
counter.Close();
Thread.Sleep(5*60*1000);
// 2nd sample
counter = new PerformanceCounter("Processor", "% Processor Time", "_Total",
"192.168.130.9");
sample2 = counter.NextSample();
counter.Close();
// Output results
Console.WriteLine("CPU util = " + CounterSample.Calculate(sample1,
sample2));