python统计cpu利用率的方法

本文实例讲述了python统计cpu利用率的方法。分享给大家供大家参考。具体实现方法如下：

#-*-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

希望本文所述对大家的Python程序设计有所帮助。