Messages in this thread | | | Subject | Re: [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2 | From | Peter Zijlstra <> | Date | Mon, 12 Mar 2007 21:42:37 +0100 |
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On Mon, 2007-03-12 at 21:11 +0100, Mike Galbraith wrote:
> How would you go about ensuring that there won't be any cycles wasted?
SCHED_IDLE or otherwise nice 19
> Killing the known corner case starvation scenarios is wonderful, but > let's not just pretend that interactive tasks don't have any special > requirements.
Interaction wants low latency, getting that is traditionally expressed in priorities - the highest prio gets the least latency (all RTOSs work like that).
There is nothing that warrants giving them more CPU time IMHO; if you think they deserve more, express that using priorities.
Priorities are a well understood concept and they work; heuristics can (and Murphy tells us they will) go wrong.
Getting the server/client thing working can be done without heuristics using class based scheduling.
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