perf_record_when_high_sys

perf_record_when_high_sys.py

#!/usr/bin/env python

from __future__ import print_function

import subprocess
import time


def perf_record(sys_threshold, interval, count):
    while True:
        kern = subprocess.check_output("mpstat %d %d | awk '{print $5}' | tail -1" % (interval, count), shell=True)
        print("%%sys: %s" % kern)

        if float(kern) < sys_threshold:
            continue
        else:
            subprocess.check_call("perf record -N -B -a -g -F 997 sleep 60", shell=True)
            break


def main():
    thresh = 30
    interval = 60
    count = 2

    perf_record(thresh, interval, count)
    print("Done at %s" % time.asctime())


if __name__ == '__main__':
    main()