CPU % - procfs - system
What it does
This metric provider calculates an estimate of the % total CPU usage based of the system based on the
-i: interval in milliseconds
By default the measurement interval is 100 ms.
> ./metric-provider-binary -i 100
This metric provider prints to Stdout a continuous stream of data. The format of the data is as follows:
TIMESTAMP: Unix timestamp, in microseconds
READING: The estimated % CPU used
Any errors are printed to Stderr.
How it works
The provider reads all the entries of the first line of the
/proc/stat file and
uses the argument the same way
htop does it. This means that CPU Utilization is
user_time+nice_time+system_time+irq_time+softirq_time+steal_time / wait_time,iowait_time+user_time+nice_time+system_time+irq_time+softirq_time+steal_time
io_wait and wait are counted both as idle.
Since we want the output as a ratio that can be expressed as an integer, we multiply with 10000.