On Thu, 21 Jan 2016 08:51:08 -0800, John Locke said: > * Nice levels are multiplicative, with a gentle 10% change for every > * nice level changed. I.e. when a CPU-bound task goes from nice 0 to > * nice 1, it will get ~10% less CPU time than another CPU-bound task
Note the ~ indicating approximately. > If I take an example of 2 tasks both with weight=1024 (NICE_0) they > should each get 50% of the CPU time. If 1 of the tasks is reniced to > NICE_1 then the NICE_0 task will get 1024/(1024+820)=56% of the CPU > time and the NICE_1 task will get 44% of the CPU time. 12% difference - that's around 10%.
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