calcost

calcost is a process resource(RSS/CPU) monitoring and averaging shell tool.

calcost use Linux ps and top command to monitor the resource consumption of a process, and then calculate the average value of CPU and RSS during this period.

usage

Usage: ./calcost [-p pid]/[-c cmd] <-t interval> <-n times>
    Use top/ps command to calculate CPU and RSS and its average value.

    -p    The PID of the specified process, Prohibit use with -c.
    -c    The CMD of the specified process, Prohibit use with -p.
    -t    Optional parameters, Use it to specify the scan time interval, the
          default time is 2 seconds.
    -n    Optional parameters, Use it to specify the number of averaging times,
          The default number is 0, which indicates an infinite loop.
          When using Ctrl-C(SIGINT,2) to stop the script from running, it will 
          use the current number of executions to calculate the average.
    -h    display this help and exit.

Example

Real-time monitoring

Real-time monitoring of CPU and RSS consumption of a processes.

./calcost -c sshd

• If multiple processes are found by command name, then you need to select one process.

  As below, 3 processes were found according to sshd, I chose the first one.

• It will loop forever to display current CPU and RSS.

• And you can press keyboard CTRL-C(or send a SIGINT signal to calcost) to stop monitoring at any time, it will calculate the recorded CPU/RSS average.

  As below, I used ctrl-c to stop the monitoring, and it calculated the average of 2 times.

Or you can directly specify the process by PID.

./calcost -c 858

Average calculation

You can specify the number of cycles to calculate the average of CPU and RSS. Used to indicate the resource consumption of a process over a period of time.

./calcost -c sshd -t 1 -n 3

• It will loop 3 times at an interval of 1 second, then stop monitoring, and then calculate the average of CPU and RSS.

Or you can directly specify the process by PID.

./calcost -c 858 -t 1 -n 3