用Python来统计本机CPU利用率

#-*-coding=utf-8-*-

import win32pdh

import time

# Counter paths

PROCESSOR_PERCENT = r'\Processor(_Total)\% Processor Time'

MEMORY_PERCENT = r'\Memory\% Committed Bytes In Use'

MEMORY_COMMITTED = r'\Memory\Committed Bytes'

PROCESS_BYTES = lambda x: r'\Process(%s)\Private Bytes' % x

class Query:

  def __init__(self):

    self.counters = {}

    self.query = None

    self.query = win32pdh.OpenQuery(None, 0)

  def add_counter(self, path):

    if win32pdh.ValidatePath(path) != 0:

      raise Exception('Invalid path: %s' % path)

    counter = win32pdh.AddCounter(self.query, path, 0)

    self.counters[path] = counter

  def remove_counter(self, path):

    win32pdh.RemoveCounter(self.counters[path])

    del self.counters[path]

  def get_values(self):

    values = {}

    win32pdh.CollectQueryData(self.query)

    for path in self.counters:

      status, value = win32pdh.GetFormattedCounterValue(

          self.counters[path], win32pdh.PDH_FMT_LONG)

      values[path] = value

    return values

sysinfo_query = Query()

sysinfo_query.add_counter(PROCESSOR_PERCENT)

sysinfo_query.add_counter(MEMORY_PERCENT)

sysinfo_query.get_values()

def get_sysinfo():

  """Return a tuple (mem_usage, cpu_usage)."""

  info = sysinfo_query.get_values()

  return info[MEMORY_PERCENT], info[PROCESSOR_PERCENT]

listcpu=[]

while True:

  time.sleep(2)

  x,y=get_sysinfo()

  listcpu.append(y)

  if len(listcpu)==10:

    icount=0

    for c in listcpu:

      if c>4:

        icount+=1

    if icount>5:

      print "在统计的1分钟内，cpu已经有5次大于4%"

    listcpu=[]

  print y