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[linrad] Re: Resources

What we are looking for, I'm afraid, is a way to get at the desired information from "plain old C". No C#, no .Net, no Registry, just a plain vanilla system call. As far as I can tell, one does not exist in Windows. 
			-- Joe, K1JT

Bill Tracey wrote:
Take a look @: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/perfmon/base/performance_data_collection.asp
This is for native code - you can either go thru the (older) registry interface, or the newer Pdh interface
For C#/.net stuff this little snip (borrowed from the PowerSDR source code) will do the job: 

private static PerformanceCounter cpu_usage;
                public static float CpuUsage
                {
                        get
                        {
                                if (cpu_usage == null)
                                {
                                        cpu_usage = new PerformanceCounter(
"Processor", "% Processor Time", "_Total", true); 
                                }
                                return cpu_usage.NextValue();
                        }
                }

PerformanceCounter is  the  package System.Diagnostics

Cheers,

Bill (kd5tfd)

At 05:58 PM 8/25/2005, Joe Taylor wrote:


Stan --
I believe the question Leif was asking -- and which I would like to have an answer for, as well -- is how a running program can interrogate the Windows system to find out what fraction of the system's time is being spent in its "idle loop." The difference between this fraction and 1.0 is the "CPU utilization". 

                -- Joe, K1JT


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