Rule Information

When we install WM Optimizer for Infrastructure we can see default rules created for WM components. I can see the rule " Critical Resource Message " rule for almost all WM components. IS this rule for CPU usage by webM component or for which resource ?

Thanks

Critical Resource Message rule is triggered when a monitored resource sends a log message of critical severity.

What is Optimizer?
What is the use of Optimizer?..
and I need some more information about Optimizer