| """ |
| turbostat prints out CPU stats |
| """ |
| |
| import os, subprocess, signal |
| import logging |
| from autotest_lib.client.bin import profiler, os_dep |
| |
| |
| class turbostat(profiler.profiler): |
| """ |
| turbostat reports processor topology, frequency, idle power-state |
| statistics, etc. |
| """ |
| version = 1 |
| |
| def initialize(self): |
| self.bin = os_dep.command('turbostat') |
| |
| def start(self, test): |
| self._output = open(os.path.join(test.profdir, "turbostat"), "wt") |
| |
| cmd = [self.bin] |
| logging.debug("Starting turbostat: %s", cmd) |
| |
| # Log the start time so a complete datetime can be computed later |
| subprocess.call(['date', '-Iseconds'], stdout=self._output) |
| |
| self._process = subprocess.Popen( |
| cmd, |
| stdout=self._output, |
| stderr=subprocess.STDOUT, |
| close_fds=True) |
| |
| def stop(self, test): |
| logging.debug("Stopping turbostat") |
| |
| os.kill(self._process.pid, signal.SIGTERM) |
| |
| self._process.wait() |
| |
| logging.debug("Stopped turbostat") |
| |
| self._output.close() |
| |
| def report(self, test): |
| pass |
