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Updates

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Original commit message from CVS:
Updates
This commit is contained in:
Wim Taymans 2002-09-12 20:41:26 +00:00
parent a0537fd60f
commit 498d3181d7
1 changed files with 14 additions and 0 deletions
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14
docs/random/wtay/scheduling_ideas
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@ -411,8 +411,22 @@ NOTES:
- what about starvation? We'll probably have to put the group
at the end of the runqueue.
- multi-out elements can introduce significant latency. consider:
(-group1----------) (-group2-----------------)
! ! ! !
! *filesrc -> mad --> *%identity -> osssink !
(-----------------) (------------------------)
mad produces N output buffers, they are queued in the bufpen, when
group1 is done, group2 is scheduled to empty the bufpen queue.
The time it takes for the first buffer to arrive at osssink equals
the time needed to decode the N-1 other buffers.
Of course, given the right buffersize for filesrc N can be reduced
to 1. mad can also suggest a buffersize to filesrc with the
BUFFER_SIZE event.