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45 lines
1.4 KiB
45 lines
1.4 KiB
7 months ago
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"""
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Run iostat with a default interval of 1 second.
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"""
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import time, os, subprocess
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from autotest_lib.client.bin import profiler
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from autotest_lib.client.common_lib import utils, error
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class iostat(profiler.profiler):
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version = 2
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def initialize(self, interval = 1, options = ''):
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# Usage: iostat [ options... ] [ <interval> [ <count> ] ]
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# e.g, iostat -tmx 2
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self.interval = interval
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self.options = options
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def start(self, test):
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cmd = "/usr/bin/iostat %s %d" % (self.options, self.interval)
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filename = "iostat." + time.strftime("%Y-%m-%d-%H-%M-%S")
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logfile = open(os.path.join(test.profdir, filename), 'w')
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p = subprocess.Popen(cmd, shell=True, stdout=logfile,
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stderr=subprocess.STDOUT)
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self.pid = p.pid
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def stop(self, test):
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try:
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term_profiler = "kill -15 %d" % self.pid
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# send SIGTERM to iostat and give it a 5-sec timeout
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utils.system(term_profiler, timeout=5)
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except error.CmdError: # probably times out
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pass
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# do a ps again to see if iostat is still there
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ps_cmd = "ps -p %d | grep iostat" % self.pid
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out = utils.system_output(ps_cmd, ignore_status=True)
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if out != '':
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kill_profiler = 'kill -9 %d' % self.pid
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utils.system(kill_profiler, ignore_status=True)
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def report(self, test):
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return None
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