private void refreshProcess(LocalStatisticsImpl statistics) {
    int pid = (int) statistics.getNumericId();
    LinuxProcFsStatistics.refreshProcess(pid, statistics);
  }
Refreshes the specified process stats instance by fetching the current OS values for the given
stats and storing them in the instance.
geode-core/src/main/java/org/apache/geode/internal/statistics/OsStatisticsProvider.java