Monitoring metric does not allow changing the time window for the instantaneous metrics

[adrianomg]

If a short time interval is selected for monitoring, e.g. 100 ms, it will compute average throughput and latency based on the items processed within the last 100 ms. It is inconvenient since only a few items may be processed in this short interval.

Ideally, users should be able to specify the time window as a different parameter than the monitoring interval.
E.g.: -monitor 100,500 (every 100 ms computes the average throughput in the last 500 ms)