[cgl_discussion] requirements for configurable Round Robin quantum and 1 ms tick

Eric.Chacron at alcatel.fr Eric.Chacron at alcatel.fr
Wed Aug 6 06:41:05 PDT 2003


Today some applications need to use Real Time process with Round Robin
policy.

Today the quantum seems to be defined by a constant value as 20 x the tick
value.
Then if i use a 10ms tick the quantum is equal to 200 ms. This seems too
large.

A second requirement could be to enable a 1 ms tick period for the timer
interrupt on Intel Pentium architectures.
Is'it compatible with kernel maximum latency ? ( remenber that some
application runs whithout any disk and without
related sources of latency like fork+ exec ...)

I would like to have the feed-back from everyone who's interrested in the
question and also from Montavista
as ther could be some link with low latency and RT scheduler for the second
point.






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