Home / ubuntu / Questions / 89659
Accepted
kfmfe04
Asked: 2011-12-22 17:12:49 +0800 CST

How do I monitor CPU core usage per thread?

  • 772

I need this information to optimize the number of worker threads my custom application is allocating.

For example, if I just use top on a single-threaded application on a two-core machine, the 100% CPU usage does not tell me if there is still unused capacity in the form of the other core!

What kind of monitoring tools can I use to detect the difference?

cpu

2 Answers

  1. Best Answer

    Use htop. It has many more features than top, including showing individual threads and individual CPU usage etc.

    http://manpages.ubuntu.com/manpages/oneiric/man1/htop.1.html

    • 24

  2. When running top, press 1, this will show per-core usage. Maybe it's what you need?

    • 20