Python Script to Return Process with highest Memory Usage

Question

I need to create a Python Script that Returns only the Process using the most memory at that time. I am having problems with parsing the values. What I have so far:

import psutil

x = psutil.pids()
for i in x:
p = psutil.Process(i)
print(p.name(), p.memory_full_info())

This returns the full list of processes in this format:

 ssh-agent pfullmem(rss=339968, vms=11350016, shared=0, text=352256, lib=0, data=421888, dirty=0, uss=598016, pss=605184, swap=0)

I am getting value errors whenever I try to manipulate these values. I want to just return the MOST memory intensive process and perhaps the RSS or VMS value.

What kind of errors do you get?

vonBerg
– vonBerg

2017-04-23 16:55:06 +00:00
Commented Apr 23, 2017 at 16:55 — vonBerg
– vonBerg, Commented Apr 23, 2017 at 16:55

EyuelDK · Accepted Answer · 2017-04-23 17:04:30Z

1

import psutil

pids = psutil.pids()
processes = map(psutil.Process, pids)
most_mem_process = max(processes, key=lambda p: p.memory_full_info().data)

answered Apr 23, 2017 at 17:04

EyuelDK

3,2392 gold badges21 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Joe Over a year ago

Thank you @EyuelDK that go me most of the way there. The only thing I am still missing is the uss number that would list the amount of memory. I have gotten this far in isolating the number: jk = psutil.Process(i).memory_percent(memtype='uss') that will take the pid as 'i' and return the uss number.

EyuelDK Over a year ago

I'm not very familiar with the psutil library, but if you want to filter based on the uss just replace p.memory_full_info().data with p.memory_full_info().uss. In the end, most_mem_process, i.e. a Process object, has all the info you need, including the uss

Panagiotis Simakis · Accepted Answer · 2017-04-24 05:44:28Z

1

import subprocess
subprocess.check_output('ps -eo pmem,cmd | sort -k 1 -nr | head -1', shell=True).decode('utf-8').replace('\n', '')

This command returns two things: The first one, is the percentage of memory usage of the process and the second one is the running process with highest memory usage.

edited Apr 24, 2017 at 5:44

answered Apr 23, 2017 at 17:38

Panagiotis Simakis

1,2671 gold badge20 silver badges48 bronze badges

1 Comment

Al Sweigart Over a year ago

Please add more information and context. What does this code do and how does this answer the user's question? If you're going to make a code-only answer, the code needs to at least be well commented.

Collectives™ on Stack Overflow

Python Script to Return Process with highest Memory Usage

2 Answers 2

2 Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related