What determines the sequence that tasks start in?


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Questions and Answers : Windows : What determines the sequence that tasks start in?
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Profile SirionStig

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Message 1141158 - Posted: 16 Aug 2011, 10:15:29 UTC

... as I have seen that, on my PC, the tasks with the closest deadline do not always start next.
Can I set it to always start the tasks with the closest deadlines next?
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Profile Gundolf Jahn

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Message 1141160 - Posted: 16 Aug 2011, 10:28:07 UTC - in response to Message 1141158.  

No, you can't.

Normally, tasks are started in FIFO (First In First Out) mode. Only when a tasks is in danger to miss its deadline, it is started in "high priority" mode, also known as EDF mode (Earliest Deadline First).

There are many, many threads on this topic on the forum. You could try an Advanced search with a longer time range.

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Message 1141162 - Posted: 16 Aug 2011, 10:46:54 UTC

Okay, thanks.
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John McLeod VII
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Message 1141879 - Posted: 18 Aug 2011, 0:50:52 UTC

It is slightly more complicated if there are multiple projects. BOINC does a modified Round Robin between projects and FIFO within a project. If any tasks require high priority, the tasks in that set are started Earliest deadline first. Any remaining CPUs do the normal Round Robin / FIFO.


BOINC WIKI
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Questions and Answers : Windows : What determines the sequence that tasks start in?


 
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