如何获取进程的内存使用率百分比? [英] How to get the percentage of memory usage of a process?

问题描述

使用以下代码，我可以在MiB中获取给定进程的内存消耗:

Using the following code, I can get the memory consumption of a give process in MiB:

def memory_usage_psutil():
    # return the memory usage in MB
    import psutil
    process = psutil.Process(os.getpid())
    mem = process.get_memory_info()[0] / float(2 ** 20)
    return mem

如何更改此值以返回内存消耗百分比?

How can I change this to return the percentage of memory consumption?

更新:在终端中为特定进程执行top命令时，我需要获取%MEM列的当前值.

Update: I need to get the current value of %MEM column when executing the top command in terminal for a specific process.

示例:我需要此函数为VirtualBox进程的进程ID返回14.2.

Example: I need this function to return 14.2 for the process id of VirtualBox process.

推荐答案

使用> c2>

这与top一致.在下面的测试脚本中，您可以将参数更改为定义consume_memory数组的range函数，该数组仅在此处用于耗尽内存以进行测试，并且python输出和top输出都将匹配:

This agrees with top. In the test script below, you can change the argument to the range function defining the consume_memory array, which is only there to use up memory for testing, and both python output and top output will match:

import os
import psutil

def memory_usage_psutil():
    # return the memory usage in percentage like top
    process = psutil.Process(os.getpid())
    mem = process.memory_percent()
    return mem

consume_memory = range(20*1000*1000)

while True:
    print memory_usage_psutil()

这篇关于如何获取进程的内存使用率百分比?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！