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。