▪ filename is the name of the output file. The performance data is output in comma-separated value format; the first row contains the counter names, and each subsequent row contains the performance data for each sampling period. The default file name is pmondiff.out.
▪ interval is the interval in milliseconds at which performance data is collected. The default interval is 1000 ms.
For example, to start logging performance counters to the file counter_log.csv at 2 second intervals, run the following command: