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  1. #1
    Regular Contributor
    Join Date
    Mar 2005
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    51

    Talking symbian CPU Scheduling algorithms

    Hi to all
    I am making same research about symbian OS threading and process.
    Did any one know what symbian CPU Scheduling algorithms use?
    Or where can I read about the kernel of Symbian?
    I have homework for OS class ;)

  2. #2
    Registered User
    Join Date
    Oct 2005
    Posts
    40

    Re: symbian CPU Scheduling algorithms

    Hi,

    If I remember well Symbian use a round robin priority based algorithm to select which thread is to be scheduled next.

    Basically it starts with the highest priority queue and runs each thread which are not blocked in turn until there is not more ready to run thread in that priority queue. It then moves to the next priority queue and so on.
    Obviously if a thread with a higher priority is ready then the scheduler goes back up the highest priority queue.

    GreG

  3. #3
    Super Contributor
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    Mar 2003
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    Finland
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    9,569

    Re: symbian CPU Scheduling algorithms


  4. #4
    Regular Contributor
    Join Date
    Mar 2005
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    51

    Re: symbian CPU Scheduling algorithms

    I don't how to thank you. thank from my heart

  5. #5
    Nokia Developer Expert
    Join Date
    Jul 2003
    Location
    Vancouver, Canada
    Posts
    220

    Re: symbian CPU Scheduling algorithms

    see online SDK docs

    Symbian EKA 1 Kernel (S60 2nd FP3)
    http://www.symbian.com/developer/tec...ion.guide.html

    and Symbian 9.1 (S60 3rd)
    http://www.symbian.com/developer/tec...2eIntroduction

  6. #6
    Registered User
    Join Date
    Dec 2011
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    2

    Re: symbian CPU Scheduling algorithms

    Quote Originally Posted by silver_man82 View Post
    I don't how to thank you. thank from my heart
    hi!
    I have to find some information for Symbian's memory management and schedular.. I tried to open links that are shared but that links cant be open :( please help me..

  7. #7
    Super Contributor
    Join Date
    Mar 2003
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    Finland
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    9,569

    Re: symbian CPU Scheduling algorithms

    symbian.com was shut down a couple of years ago, or so.

    http://www.developer.nokia.com/Commu...n_OS_Internals

  8. #8
    Registered User
    Join Date
    Dec 2011
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    2

    Re: symbian CPU Scheduling algorithms

    thank you :)

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