Subj : Nice value and thread priority
To   : comp.programming.threads
From : Vinay N Karanth
Date : Mon Jul 18 2005 05:12 pm


Hello


I am trying to understand the scheduling in Linux.



>From one of the topics in this list


http://groups-beta.google.com/ group/linux.kernel/browse_frm/ thread/c2...

Here it mentions that for the threads with policy SCHED_OTHER have soft
priority  over the 'nice' range of -20 to +19 (static priority of
100-139)
But when I see the process details with "top -b- n 1" command the
priorities
of the tasks shown are all in 10  to 30 value range and the nice
valuesare -20 to 19


Can anybody please explain me the relationship between the nice value
and the
priority needed for thread scheduling in real time.


Thanx
Vinay

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