diff options
Diffstat (limited to 'tools/collectors/sysmetrics/pidstat.py')
| -rw-r--r-- | tools/collectors/sysmetrics/pidstat.py | 48 |
1 files changed, 40 insertions, 8 deletions
diff --git a/tools/collectors/sysmetrics/pidstat.py b/tools/collectors/sysmetrics/pidstat.py index 245d8d22..277fdb11 100644 --- a/tools/collectors/sysmetrics/pidstat.py +++ b/tools/collectors/sysmetrics/pidstat.py @@ -76,7 +76,7 @@ class Pidstat(collector.ICollector): with open(self._log, 'w') as logfile: cmd = ['sudo', 'LC_ALL=' + settings.getValue('DEFAULT_CMD_LOCALE'), 'pidstat', settings.getValue('PIDSTAT_OPTIONS'), - '-p', ','.join(pids), + '-t', '-p', ','.join(pids), str(settings.getValue('PIDSTAT_SAMPLE_INTERVAL'))] self._logger.debug('%s', ' '.join(cmd)) self._pid = subprocess.Popen(cmd, stdout=logfile, bufsize=0).pid @@ -116,16 +116,48 @@ class Pidstat(collector.ICollector): # combine stored header fields with actual values tmp_res = OrderedDict(zip(tmp_header, line[8:].split())) - # use process's name and its pid as unique key - key = tmp_res.pop('Command') + '_' + tmp_res['PID'] - # store values for given command into results dict - if key in self._results: - self._results[key].update(tmp_res) - else: - self._results[key] = tmp_res + cmd = tmp_res.pop('Command') + # remove unused fields (given by option '-t') + tmp_res.pop('UID') + tmp_res.pop('TID') + if '|_' not in cmd: # main process + # use process's name and its pid as unique key + tmp_pid = tmp_res.pop('TGID') + tmp_key = "%s_%s" % (cmd, tmp_pid) + # do not trust cpu usage of pid + # see VSPERF-569 for more details + if 'CPU' not in tmp_header: + self.update_results(tmp_key, tmp_res, False) + else: # thread + # accumulate cpu usage of all threads + if 'CPU' in tmp_header: + tmp_res.pop('TGID') + self.update_results(tmp_key, tmp_res, True) line = logfile.readline() + def update_results(self, key, result, accumulate=False): + """ + Update final results dictionary. If ``accumulate`` param is set to + ``True``, try to accumulate existing values. + """ + # store values for given command into results dict + if key not in self._results: + self._results[key] = result + elif accumulate: + for field in result: + if field not in self._results[key]: + self._results[key][field] = result[field] + else: + try: + val = float(self._results[key][field]) + float(result[field]) + self._results[key][field] = '{0:.2f}'.format(val) + except ValueError: + # cannot cast to float, let's update with the previous value + self._results[key][field] = result[field] + else: + self._results[key].update(result) + def get_results(self): """Returns collected statistics. """ |