client/profilers/mpstat/mpstat.py

   1 """
   2 Sets up a subprocess to run mpstat on a specified interval, default 1 second
   3 """
   4 import time, os, subprocess
   5 from autotest_lib.client.bin import profiler
   6
   7
   8 class mpstat(profiler.profiler):
   9     version = 1
  10
  11
  12     def initialize(self, interval = 1):
  13         self.interval = interval
  14
  15
  16     def start(self, test):
  17         cmd = "mpstat -P ALL %d" % self.interval
  18         logfile = open(os.path.join(test.profdir, "mpstat"), 'w')
  19         p = subprocess.Popen(cmd, shell=True, stdout=logfile,
  20                                         stderr=subprocess.STDOUT)
  21         self.pid = p.pid
  22
  23
  24     def stop(self, test):
  25         os.kill(self.pid, 15)
  26
  27
  28     def report(self, test):
  29         return None