python在linux系统下获取系统内存使用情况的方法
本文实例讲述了python在linux系统下获取系统内存使用情况的方法。分享给大家供大家参考。具体如下:
""" Simplemoduleforgettingamountofmemoryused byaspecifieduser'sprocessesonaUNIXsystem. ItusesUNIXpsutilitytogetthememoryusagefor aspecifiedusernameandpipeittoawkforsummingup perapplicationmemoryusageandreturnthetotal. Python'sPopen()fromsubprocessmoduleisused forspawningpsandawk. """ importsubprocess classMemoryMonitor(object): def__init__(self,username): """CreatenewMemoryMonitorinstance.""" self.username=username defusage(self): """Returnintcontainingmemoryusedbyuser'sprocesses.""" self.process=subprocess.Popen("ps-u%s-orss|awk'{sum+=$1}END{printsum}'"%self.username, shell=True, stdout=subprocess.PIPE, ) self.stdout_list=self.process.communicate()[0].split('\n') returnint(self.stdout_list[0])
将上面的代码保存为:memorymonitor.py
调用方法如下:
frommemorymonitorimportMemoryMonitor memory_mon=MemoryMonitor('username') used_memory=memory_mon.usage()
希望本文所述对大家的Python程序设计有所帮助。