Is there a particular formula to calculate the amount of cpu resources that is allocated for a process when you "nice" it?
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It depends on what scheduler you are using.
See for example
- http://oreilly.com/catalog/linuxkernel/chapter/ch10.html
- http://www.informit.com/articles/article.aspx?p=101760
Also source code of Linux scheduler.
It's rather complicated by it's nature (trying to optimize CPU time, performance and responsiveness).
Olli
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