FreqSource.py 文件源码

def update(self):
        """Update CPU frequency data"""
        def get_avarage_cpu_freq():
            with open("/proc/cpuinfo") as cpuinfo:
                cores_freq = []
                for line in cpuinfo:
                    if "cpu MHz" in line:
                        core_freq = re.findall('\d+\.\d+', line)
                        cores_freq += core_freq
            return round(sum(float(x) for x in cores_freq) / len(cores_freq), 1)

        try:
            cur_freq = int(psutil.cpu_freq().current)
        except:
            cur_freq = 0
            try:
                cur_freq = get_avarage_cpu_freq()
            except:
                cur_freq = 0
                logging.debug("Frequency unavailable")

        if self.stress_started:
            self.samples_taken += 1

        # Here is where we need to generate the max frequency lost

        if self.is_admin and self.samples_taken > self.WAIT_SAMPLES:
            self.perf_lost = int(self.top_freq) - int(cur_freq)
            if self.top_freq != 0:
                self.perf_lost = (round(float(self.perf_lost) / float(self.top_freq) * 100, 1))
            else:
                self.perf_lost = 0
            if self.perf_lost > self.max_perf_lost:
                self.max_perf_lost = self.perf_lost
        elif not self.is_admin:
            self.max_perf_lost = 0

        self.last_freq = cur_freq