cpu android process monitor task manager

#CPU ANDROID PROCESS MONITOR TASK MANAGER CODE#
#CPU ANDROID PROCESS MONITOR TASK MANAGER DOWNLOAD#

TempProcessInfo = ProcessInfoByID(TempProcess.Id) Private static void UpdateCpuUsagePercent(įoreach (Process TempProcess in NewProcessList)

What we do here is use the PerformanceCounter to monitor the idle process CPU usage as we know that the real CPU usage is 100% - idle CPU usage% (you can also do this by monitoring the ' _Total' value and 100 - _Total = idle CPU usage). Well, for a quick solution, I used a PerformanceCounter, but there is only one instance of it so it keeps the overall performance pretty satisfying. Well, I don't know why for some reason Microsoft decided not to allow gathering any information about the system idle process (which was allowed in. NET 2.0, you'll be surprised to see that what was good enough for. If you have tried running the old version on. We won't use the first two, the other two ( KernelTime and UserTime) are equivalent to the managed version, after realizing that this pretty much goes the same way as the managed version, just that it is a bit more difficult to get the GetSystemTimes to work than to use the class, but the benefit comes in the way of better performance.NET 2.0 Style This function gets us four parameters CreationTime, ExitTime, KernelTime and UserTime.

#CPU ANDROID PROCESS MONITOR TASK MANAGER CODE#

This API version does not include the CPU usage of threads (the code is very similar to that of process code) I was too lazy to write it.įor getting the CPU usage, using the API approach, we need a function called GetProcessTimes. My big thanks go to PInvoke for their contribution to the translated API availability which helped me a lot. I migrated the code by following ejor's article Get CPU Usage with GetSystemTimes. Surprisingly, I found many C++ articles on this and even some old VB code. NET 2.0 changes and some of the comments I got here, I decided to write an API version for this. NewRawUsageValue = GetCurrentUsageValue() ĬpuUsage = (( int)((NewRawUsageValue - OldRawUsageValue) /Īfter I was left with some bitter taste of the. holds the cpu usage in a friendly reading way. long OldRawUsageValue = GetCurrentUsageValue() refresh delay 1.5 seconds int RefreshInterval = 1500 I know it sounds complicated, the following code will explain it better:

the managed way - using the System.Diagnostics namespaceĪfter we get this value, we keep it for the next run (the refresh time is usually 1.5 seconds), we then decrease the new value from the old value and divide it by the refresh time.

the API way - using the GetSystemTimes() function.

CPU Usage Calculation Conceptįor calculating the CPU usage of processes, we need to get a value that indicates for how much time they have used the processor in a certain period of time, this value is equal to the sum of the time that the kernel and the user have spent on these processes, I will demonstrate two ways to achieve this value: I tried it and it's a good method as long as you use only a few (1-3) PerformanceCounters because it consumes a lot of CPU which got me to a usage of 6% - 18% for my own Task Manager for just the refresh operation every 2 seconds.

I searched the web for methods of getting the CPU usage but the best I could find was only advices for using PerformanceCounter('Processor','% Process Time',ProcessName) for monitoring the usage value. My journey began when I had to write a Task Manager look alike that also had some netstat features.

#CPU ANDROID PROCESS MONITOR TASK MANAGER DOWNLOAD#

Download demo project (.NET 2.0) - 13.6 KB.

Cpu android process monitor task manager