Subject:
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Re: Re: Scheduler patch
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Wed, 10 Jul 2002 10:30:56 GMT
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Viewed:
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5500 times
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> In lugnet.robotics.rcx.legos, Joseph Woolley writes:
> I posted some code and a simple explaination of my implementation. Here is
> the link:
Thanks for the link, your solution of proportional timeslicing is more
straightforward than mine which I like. The only downside would be that a
high prioritized process would have it's wakeup conditions checked less
frequently than a low prioritized process, which make no sense, but if the
wakeup/sensor handling will be moved from the scheduler the problem will not
occur.
> Let me know if you need clarification or want more information/code (I have
> the .tar.gz to compile a LegOS kernel that is somewhere between 2.6 and 2.7
> and my changes added in). I want to avoid confusing the development effort
> by releasing the whole thing publicly... but it is available for further
> examination if necessary.
I didn't look into the multiple wakeup part but the other seems to be
understandable.
> I agree, however, I am not sure we need something as fancy as the DAT4
> implementation. I think in nearly all cases, 99.99% sensor accuracy is
> acceptable. I bet we can achieve that with a smaller/simpler mechanism. In
> the cases where 100% accuracy is needed, then the DAT4 implemenation may be
> the way to go. Other opinions?
Well, from my experiences the sensor accuracy is MUCH better with the dat4
implementation. It would be nice with a smaller/simpler solution though.
Can you give me an example of when a user needs to have several processes
running to solve a task. I'm probably stupid not finding any :P
/Joel
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Message has 2 Replies:
 | | Re: Re: Scheduler patch
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| "Joel Uddén" wrote (...) not (...) Actually, each task gets equal "wakeup" checking. The only difference between a low priority task and a high priority task is that the high priority task gets a larger time-slice when it is awake. This is not an (...) (24 years ago, 10-Jul-02, to lugnet.robotics.rcx.legos)
| | | Re: Re: Scheduler patch
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| (...) I'd built a maze solver. When the solver makes a step (for example forward) it uses the light sensor to search for a wall and the rotation sensor to measure the distance it has traveled. If a wall is hit, the solver steps back until it reaches (...) (24 years ago, 10-Jul-02, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: Re: Scheduler patch
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| I posted some code and a simple explaination of my implementation. Here is the link: (URL) me know if you need clarification or want more information/code (I have the .tar.gz to compile a LegOS kernel that is somewhere between 2.6 and 2.7 and my (...) (24 years ago, 7-Jul-02, to lugnet.robotics.rcx.legos)
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