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#Utime and stime stat how to

NOTE: Please let me know if I'm evaluating wrong fields for system and user CPU time for a process? Or what is the right way to calculate? Re: Utime and stime are less when getrusage (RUSAGETHREAD) is executed on a tickless CPU.

I validated output of atop command for system and user CPU time but my calculation is coming out wrong. For CPU time consumption in user mode I'm using the formula: (utime/ No of clock ticks) With Pingdom, you get constant website uptime checks and real-time alerts to quickly begin remedial action in case of an outage.

I'm calculating CPU time consumption(in seconds) in system mode using following formula: (stime / No of clock ticks).

stime: Amount of time that this process has been scheduled in kernel(system) mode.

The status page will display your device Name, Status, Status Time, Response.

utime: Amount of time that this process has been scheduled in user mode You may also want to show your visitors the status for a group of your devices.

There are two fields utime and stime in /proc//stat file, whose documentation says: Here we are taking the virtual memory status, and the resident set size. We can get all of the details from /proc/self/stat folder.

#Utime and stime stat how to

So here we will see how to get the memory usage statistics under Linux environment using C++. For this example, we are using Linux operating system. I want to calculate CPU time consumption of a particular process in system mode and user mode using statistics present in /proc/. This process depends on operating systems.