Views:
714
Votes: 3
✅ Solution
Tags:
google-chrome
cpu
conky
Link:
🔍 See Original Question on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/992779
Title:
How to narrow down what is taking 100% CPU on alternating cores
ID:
/2018/01/06/How-to-narrow-down-what-is-taking-100_-CPU-on-alternating-cores
Created:
January 6, 2018
Edited: June 12, 2020
Upload:
September 15, 2024
Layout: post
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false
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Whilst watching video one core will spike to 100% for a few moments drop off and then another core will spike to 100%.
30 second htop .gif
30 second conky .gif
Other points:
- CPU MHz running over 3000 Mhz (3 GHz) when it is normally around 1000 MHz
- Temperature about 20 degrees Celsius above normal.
Narrowing it down
While writing this question I accidentally closed the chrome tab with the video on external monitor. CPU frequencies and load dropped to normal. I’ve noticed before how apt-get will spike a single CPU to 100% but this problem is nothing like that.
The process causing abnormal behaviour is chrome but what steps can be taken to narrow it down? ie Can a certain sub-process be identified within video codec-land (whatever you call it) and targeted for bug reporting?
Chrome Version
Version 63.0.3239.132 (Official Build) (64-bit)