Peter Williams wrote:
These patches implement CPU usage rate limits for tasks.
Personally, I'm more comfortable with guarantees rather than limits.
Specifying a limit doesn't do anything to ensure that a task (or group
of tasks) gets enough cpu time to actually accomplish anything unless
you specify limits on every task in the system.
Suppose you have a server app that needs at least 50% of the cpu. With
a guarantee, you can say "this guy needs 50%, and I don't care about
anything else". With limits you have to flip it around--"all these guys
together are limited to 50%, and that guy isn't limited". Seems
counterintuitive.
Chris
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