What do the colors in the Task manager CPU usage graph mean?

[norm Mackey]

Trying to debug a slow system, I noticed that the CPU
usage graph of the performance tab of the Task manager
display is mostly displayed in red. What does this mean?
I can find zero documentation on what these colors mean
and I do not think that I should have to install the
professional resource kit just to find out if I can find
out from its additional help resources - the task
manager's own help is useless.

 

[Dave Patrick]

To graph the percentage of processor time in privileged or kernel mode,
click Show Kernel Times on the View menu. This is a measure of the time that
applications are using operating system services. The remaining time, known
as user mode, is spent running threads within the application code.

 

[Bob I]

Try Taskmanager Help and search for "red"