Ubuntu – How to monitor CPU core usage per thread

Change all the colordepths in my /etc/X11/xorg.conf to 24 bit. Both 32 and 16 bit had the problem, but 24 bit works.

I noticed a lot of errors about defaultdepth 32 which prompted me to change it.

Also, I'm using the nvidia binary driver and I added the following options at the same time, not sure if they helped or not:

Option "AddARGBGLXVisuals" "True" Option "DisableGLXRootClipping" "True"

Now my cpu is finally back to normal and compiz is much more responsive than it ever was before!

source: http://ubuntuforums.org/showthread.php?t=1873768

I believe Top lists the percentage per thread (logical core), so on your computer you could have up to 4 processes each listed as 100% CPU. Unless you write a program to be idle and wait for hardware interrupts anything you run will take 100% of the thread it is running on as long as it runs. A processes you run will only be on a single thread unless you explicitly program them to be multithreaded, although you may call a multithreaded function without knowing it (some FFT algorithms are multi-threaded).

In WSL top only shows Linux processes, so WSL is using 200%/4=50% of your total, but Windows shows everything together so it is taking up the other 20% to get up to 70% of the total CPU time. "mpstat -P all" seems to be picking up on the Windows processes (perhaps it's a lower level hardware call) and reporting as a percentage of total CPU time, so max would be 25% per thread, but within a couple percent may be as close as it actually gets. The only thing I'm not sure about is why Windows isn't showing 2 threads pegged at 100%.