python实现简易内存监控

时间:2019-04-20
本文章向大家介绍python实现简易内存监控，主要包括python实现简易内存监控使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。

本例主要功能：每隔3秒获取系统内存，当内存超过设定的警报值时，获取所有进程占用内存并发出警报声。内存值和所有进程占用内存记入log，log文件按天命名。

1 获取cpu、内存、进程信息

利用WMI

简单说明下，WMI的全称是Windows Management Instrumentation，即Windows管理规范。它是Windows操作系统上管理数据和操作的基础设施。我们可以使用WMI脚本或者应用自动化管理任务等。

安装模块

WMI下载地址
win32com下载地址：

学会使用WMI

不错的教程

获取cpu、内存、磁盘

def getSysInfo(wmiService = None):
 result = {}
 if wmiService == None:
  wmiService = wmi.WMI()
 # cpu
 for cpu in wmiService.Win32_Processor():
  timestamp = time.strftime('%a, %d %b %Y %H:%M:%S', time.localtime())
  result['cpuPercent'] = cpu.loadPercentage
 # memory
 cs = wmiService.Win32_ComputerSystem()
 os = wmiService.Win32_OperatingSystem()
 result['memTotal'] = int(int(cs[0].TotalPhysicalMemory)/1024/1024)
 result['memFree'] = int(int(os[0].FreePhysicalMemory)/1024)
 result['memPercent']=result['memFree'] * 100 /result['memTotal']
 #disk
 result['diskTotal'] = 0
 result['diskFree'] = 0
 for disk in wmiService.Win32_LogicalDisk(DriveType=3):
  result['diskTotal'] += int(disk.Size)
  result['diskFree'] += int(disk.FreeSpace)
 result['diskTotal'] = int(result['diskTotal']/1024/1024)
 result['diskFree'] = int(result['diskFree']/1024/1024)
 return result

获取所有进程占用内存

def getAllProcessInfo(mywmi = None): 
 """取出全部进程的进程名，进程ID，进程实际内存, 虚拟内存,CPU使用率 
 """ 
 allProcessList = []

 allProcess = mywmi.ExecQuery("SELECT * FROM Win32_PerfFormattedData_PerfProc_Process")
 #print (allProcess.count)
 for j in allProcess:
  #print j.Properties_("PercentPrivilegedTime").__int__()
  ##print j.Properties_("name").__str__()+" "+j.Properties_("IDProcess").__str__()+" "+j.Properties_("PercentPrivilegedTime").__str__()
  #for pro in j.Properties_:
  # print (pro.name)
  #break
  name = j.Properties_("name").__str__()
  if name != "_Total" and name !="Idle":
   pid = j.Properties_("IDProcess").__str__()
   PercentPrivilegedTime = j.Properties_("PercentPrivilegedTime").__int__()
   WorkingSetPrivate = j.Properties_("WorkingSetPrivate").__int__()/1024
   WorkingSet = j.Properties_("WorkingSet").__int__()/1024
   allProcessList.append([name, pid, WorkingSetPrivate, WorkingSet, PercentPrivilegedTime])

 return allProcessList

也可以用psutil

import psutil,time 
from operator import itemgetter, attrgetter

def getProcessInfo(p): 
 """取出指定进程占用的进程名，进程ID，进程实际内存, 虚拟内存,CPU使用率 
 """ 
 try: 
  cpu = int(p.cpu_percent(interval=0)) 
  memory = p.memory_info() 
  rss = memory.rss/1024
  vms = memory.vms/1024
  name = p.name() 
  pid = p.pid 
 except psutil.Error: 
  name = "Closed_Process" 
  pid = 0 
  rss = 0 
  vms = 0 
  cpu = 0 
 #return [name.upper(), pid, rss, vms] 
 return [name, pid, vms, rss, cpu] 

def getAllProcessInfo(): 
 """取出全部进程的进程名，进程ID，进程实际内存, 虚拟内存,CPU使用率 
 """ 
 instances = [] 
 all_processes = list(psutil.process_iter()) 
 for proc in all_processes: 
  proc.cpu_percent(interval=0) 
 #此处sleep1秒是取正确取出CPU使用率的重点 
 time.sleep(1) 
 for proc in all_processes: 
  instances.append(getProcessInfo(proc)) 
 return instances 


if __name__ == '__main__': 
 processInfoList = getAllProcessInfo()
 processInfoList.sort(key=itemgetter(2), reverse=True)
 for p in processInfoList:
  print(p)

2. 保存log

配置config文件

[loggers]
keys=example01
[logger_example01]
handlers=hand04

[handlers]
keys=hand04
[handler_hand04]
class=handlers.TimedRotatingFileHandler
level=DEBUG
formatter=form01
args=('./logs/monitor.log', 'd', 1, 7)

[formatters]
keys=form01,form02
[formatter_form01]
format=%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s
datefmt=%Y-%m-%d %H:%M:%S

记录log

import logging
import logging.config

logger.info("message")
logger.warning("message")
logger.error("message")

3. 完整代码

文件夹结构：

maintain
?monitor
—-logs
—-logger.conf
—-monitor.py
?packages
—-init.py
—-processinfo.py
—-sysinfo.py

monitor

import wmi 
import time
import winsound 
import logging
import logging.config
from operator import itemgetter, attrgetter
from os import path

import packages.sysinfo #使用wmi
#import packages.ProcessInfo #使用

#def ShowProcessInfo():
# processInfoList = packages.ProcessInfo.getAllProcessInfo()
# processInfoList.sort(key=itemgetter(2), reverse=True)
# for p in processInfoList:  
#  logger.info(p)

def ShowProcessInfo(wmiService = None):
 processInfoList = packages.sysinfo.getAllProcessInfo(wmiService)
 processInfoList.sort(key=itemgetter(2), reverse=True)
 for p in processInfoList:  
  logger.info(p)

if __name__ == '__main__':
 MemPerWorningLine = 50
 MemPerErrorLine = 20
 ErrorAlertCount = 10
 ProcessInfoCount = 10
 counterProcessInfo = ProcessInfoCount

 print("Memory monitor start!")
 log_file_path = path.join(path.dirname(path.abspath(__file__)), 'logger.conf')
 #print(log_file_path)
 logging.config.fileConfig(log_file_path)
 logger = logging.getLogger("example01")
 wmiService = wmi.WMI()
 while True:
  memPercent = int(packages.sysinfo.getSysInfo(wmiService)['memPercent'])
  strMemPercent = 'FreeMemory: ' + str(memPercent) + '%'
  if(memPercent < MemPerErrorLine):
   logger.error(strMemPercent)
   #ProcessInfoList
   counterProcessInfo+=1
   if(counterProcessInfo >= ProcessInfoCount):
    ShowProcessInfo(wmiService)
    counterProcessInfo = 0
   #ALert
   counter = 1
   while counter <= ErrorAlertCount:
    winsound.Beep(2080, 100) 
    time.sleep(0.1)
    counter += 1
  elif(memPercent < MemPerWorningLine):
   logger.warning(strMemPercent)
   #ProcessInfoList
   counterProcessInfo+=1
   if(counterProcessInfo >= ProcessInfoCount):
    ShowProcessInfo(wmiService)
    counterProcessInfo = 0
   #ALert
   winsound.Beep(2015, 2000) 
  else:
   logger.info(strMemPercent)
  time.sleep(3)

sysinfo

# -*- coding: utf-8 -*-

import wmi 
import os 
import sys 
import platform 
import time 
import win32api
import win32com
from win32com.client import GetObject
from operator import itemgetter, attrgetter

def getSysInfo(wmiService = None):
 result = {}
 if wmiService == None:
  wmiService = wmi.WMI()
 # cpu
 for cpu in wmiService.Win32_Processor():
  timestamp = time.strftime('%a, %d %b %Y %H:%M:%S', time.localtime())
  result['cpuPercent'] = cpu.loadPercentage
 # memory
 cs = wmiService.Win32_ComputerSystem()
 os = wmiService.Win32_OperatingSystem()
 result['memTotal'] = int(int(cs[0].TotalPhysicalMemory)/1024/1024)
 result['memFree'] = int(int(os[0].FreePhysicalMemory)/1024)
 result['memPercent']=result['memFree'] * 100 /result['memTotal']
 #disk
 result['diskTotal'] = 0
 result['diskFree'] = 0
 for disk in wmiService.Win32_LogicalDisk(DriveType=3):
  result['diskTotal'] += int(disk.Size)
  result['diskFree'] += int(disk.FreeSpace)
 result['diskTotal'] = int(result['diskTotal']/1024/1024)
 result['diskFree'] = int(result['diskFree']/1024/1024)
 return result

def sys_version(): 
 c = wmi.WMI () 
 #获取操作系统版本 
 for sys in c.Win32_OperatingSystem(): 
  print ("Version:%s" % sys.Caption.encode("UTF8"),"Vernum:%s" % sys.BuildNumber)
  print (sys.OSArchitecture.encode("UTF8"))#系统是32位还是64位的 
  print (sys.NumberOfProcesses) #当前系统运行的进程总数

def cpu_mem(): 
 c = wmi.WMI ()  
 #CPU类型和内存 
 for processor in c.Win32_Processor(): 
  #print "Processor ID: %s" % processor.DeviceID 
  print ("Process Name: %s" % processor.Name.strip() )
 for Memory in c.Win32_PhysicalMemory(): 
  print ("Memory Capacity: %.fMB" %(int(Memory.Capacity)/1048576))

def cpu_use(): 
 #5s取一次CPU的使用率 
 c = wmi.WMI() 
 while True: 
  for cpu in c.Win32_Processor(): 
    timestamp = time.strftime('%a, %d %b %Y %H:%M:%S', time.localtime()) 
    print ('%s | Utilization: %s: %d %%' % (timestamp, cpu.DeviceID, cpu.LoadPercentage)) 
    time.sleep(5) 

def disk(): 
 c = wmi.WMI () 
 #获取硬盘分区 
 for physical_disk in c.Win32_DiskDrive (): 
  for partition in physical_disk.associators ("Win32_DiskDriveToDiskPartition"): 
   for logical_disk in partition.associators ("Win32_LogicalDiskToPartition"): 
    print (physical_disk.Caption.encode("UTF8"), partition.Caption.encode("UTF8"), logical_disk.Caption)

 #获取硬盘使用百分情况 
 for disk in c.Win32_LogicalDisk (DriveType=3): 
  print (disk.Caption, "%0.2f%% free" % (100.0 * long (disk.FreeSpace) / long (disk.Size)))

def network(): 
 c = wmi.WMI ()  
 #获取MAC和IP地址 
 for interface in c.Win32_NetworkAdapterConfiguration (IPEnabled=1): 
  print ("MAC: %s" % interface.MACAddress )
 for ip_address in interface.IPAddress: 
  print ("ip_add: %s" % ip_address )
 print

 #获取自启动程序的位置 
 for s in c.Win32_StartupCommand (): 
  print ("[%s] %s <%s>" % (s.Location.encode("UTF8"), s.Caption.encode("UTF8"), s.Command.encode("UTF8"))) 


 #获取当前运行的进程 
 for process in c.Win32_Process (): 
  print (process.ProcessId, process.Name)

def getAllProcessInfo(mywmi = None): 
 """取出全部进程的进程名，进程ID，内存（专有工作集）, 工作集
 """ 
 allProcessList = []

 allProcess = mywmi.ExecQuery("SELECT * FROM Win32_PerfFormattedData_PerfProc_Process")
 #print (allProcess.count)
 for j in allProcess:
  #print j.Properties_("PercentPrivilegedTime").__int__()
  ##print j.Properties_("name").__str__()+" "+j.Properties_("IDProcess").__str__()+" "+j.Properties_("PercentPrivilegedTime").__str__()
  #for pro in j.Properties_:
  # print (pro.name)
  #break
  name = j.Properties_("name").__str__()
  if name != "_Total" and name !="Idle":
   pid = j.Properties_("IDProcess").__str__()
   PercentPrivilegedTime = j.Properties_("PercentPrivilegedTime").__int__()
   WorkingSetPrivate = j.Properties_("WorkingSetPrivate").__int__()/1024
   WorkingSet = j.Properties_("WorkingSet").__int__()/1024
   allProcessList.append([name, pid, WorkingSetPrivate, WorkingSet, PercentPrivilegedTime])

# allProcess = mywmi.ExecQuery("select * from Win32_Process")
# for i in allProcess:
#  Name = str(i.Properties_("Name"))
#  ProcessID = int(i.Properties_("ProcessID"))
#  WorkingSetSize = int(i.Properties_("WorkingSetSize"))/1024
#  #VirtualSize = int(i.Properties_("VirtualSize"))/1024
#  PeakWorkingSetSize = int(i.Properties_("PeakWorkingSetSize"))/1024
#  CreationDate = str(i.Properties_("CreationDate"))
#  allProcessList.append([Name, ProcessID, WorkingSetSize, PeakWorkingSetSize, CreationDate])

 return allProcessList

#def main(): 
 #sys_version() 
 #cpu_mem() 
 #disk() 
 #network() 
 #cpu_use()

if __name__ == '__main__': 
 #mywmi = GetObject("winmgmts:")
 mywmi = wmi.WMI()
 processInfoList = getAllProcessInfo(mywmi)
 processInfoList.sort(key=itemgetter(2), reverse=True)
 for processinfo in processInfoList:
  print(processinfo)

processinfo

import psutil,time 
from operator import itemgetter, attrgetter

def getProcessInfo(p): 
 """取出指定进程占用的进程名，进程ID，进程实际内存, 虚拟内存,CPU使用率 
 """ 
 try: 
  cpu = int(p.cpu_percent(interval=0)) 
  memory = p.memory_info() 
  rss = memory.rss/1024
  vms = memory.vms/1024
  name = p.name() 
  pid = p.pid 
 except psutil.Error: 
  name = "Closed_Process" 
  pid = 0 
  rss = 0 
  vms = 0 
  cpu = 0 
 #return [name.upper(), pid, rss, vms] 
 return [name, pid, vms, rss, cpu] 

def getAllProcessInfo(): 
 """取出全部进程的进程名，进程ID，进程实际内存, 虚拟内存,CPU使用率 
 """ 
 instances = [] 
 all_processes = list(psutil.process_iter()) 
 for proc in all_processes: 
  proc.cpu_percent(interval=0) 
 #此处sleep1秒是取正确取出CPU使用率的重点 
 time.sleep(1) 
 for proc in all_processes: 
  instances.append(getProcessInfo(proc)) 
 return instances 


if __name__ == '__main__': 
 processInfoList = getAllProcessInfo()
 processInfoList.sort(key=itemgetter(2), reverse=True)
 for p in processInfoList:
  print(p)

logger

#logger.conf
###############################################
[loggers]
keys=root,example01,example02
[logger_root]
level=DEBUG
handlers=hand01,hand02
[logger_example01]
handlers=hand01,hand04
qualname=example01
propagate=0
[logger_example02]
handlers=hand01,hand03
qualname=example02
propagate=0
###############################################
[handlers]
keys=hand01,hand02,hand03,hand04
[handler_hand01]
class=StreamHandler
level=INFO
formatter=form02
args=(sys.stderr,)
[handler_hand02]
class=FileHandler
level=DEBUG
formatter=form01
args=('myapp.log', 'a')
[handler_hand03]
class=handlers.RotatingFileHandler
level=INFO
formatter=form02
args=('myapp.log', 'a', 10*1024*1024, 5)
[handler_hand04]
class=handlers.TimedRotatingFileHandler
level=DEBUG
formatter=form01
args=('./logs/monitor.log', 'd', 1, 7)
###############################################
[formatters]
keys=form01,form02
[formatter_form01]
format=%(asctime)s %(filename)s[line:%(lineno)d] %(levelname)s %(message)s
datefmt=%Y-%m-%d %H:%M:%S
[formatter_form02]
format=%(asctime)-12s: %(levelname)-8s %(message)s
datefmt=%Y-%m-%d %H:%M:%S

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。

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