7/10/2023 0 Comments Utime scriptfodder![]() Time is responsibility of OS/RTOS and is done outside of MicroPython, ![]() On systems with underlying OS (including some Maintaining actual calendar date/time: This requires a Time Epoch: Unix port uses standard for POSIX systems epoch of Measuring time intervals, and for delays. LTopProcess.The utime module provides functions for getting the current time and date, This is us, strip off the % and return it Integer lCurrentPID = Integer.parseInt(lSplit) On the line that is our process, field 0 is a PID Make sure we can handle if we can't parse the int Don't even bother if we don't have at least the 4 NOTE: We trim because sometimes we had the first field in the split be a "". Split on 4, the CPU % is the 3rd field. While ( (lLine = bufferedReader.readLine()) != null ) While we have stuff to read and we have not found our PID, process the lines Process lTopProcess = Runtime.getRuntime().exec("top") īufferedReader bufferedReader = new BufferedReader(new InputStreamReader(lTopProcess.getInputStream())) Make a call to top so we have all the processes CPU Public static int getAppCPUUsage( Integer aAppPID) top, so there is a fair bit of parsing. This is an alternate way, but it takes the entire output of Logger.e(Constants.TAG, "Unable to get Total CPU usage") Return restrictPercentage(work * 100 / (float) total) Long total = work + Long.parseLong(sa) + Long.parseLong(sa) + Long.parseLong(sa) + Long.parseLong(sa) Long work = Long.parseLong(sa) + Long.parseLong(sa) + Long.parseLong(sa) String sa = reader.readLine().split("+", 9) this version only returns a single line for the app, so far less parsingīufferedReader reader = new BufferedReader(new FileReader("/proc/stat")) Int lM圜PUUsage = getAppCPUUsage( lMyProcessID ) Integer lMyProcessID = android.os.Process.myPid() I did this in Android, and it makes a kernel top call and gets the CPU usage for your apps PID using what top returns. Here is another way that I got my App's CPU usage. Resident and data_and_stack parameters used for getting memory usage and obtained from /proc//statm file. State, ppid, priority, nice, num_threads parameters obtained also from /proc//stat file. Utime, stime, cutime, cstime, starttime used for getting cpu usage and obtained from /proc//stat file. There is two versions simple monochrome(fast) and colored version(little bit slow, but useful especially for monitoring the statе of processes). It is a linux/unix system monitor and process manager through procfs, like " top" or " ps". Here is my simple solution written in BASH. How to get total cpu usage in Linux (c++)Ĭalculating CPU usage of a process in Linux Top and ps not showing the same cpu result Next we get the total elapsed time in seconds since the process started: seconds = uptime - (starttime / Hertz)įinally we calculate the CPU usage percentage: cpu_usage = 100 * ((total_time / Hertz) / seconds) If we do, then we add those values to total_time: total_time = total_time + cutime + cstime We also have to decide whether we want to include the time from children processes.
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