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SubjectRe: tvtime and the Linux 2.6 scheduler
On Mon, May 24, 2004 at 02:54:19AM +1000, Con Kolivas wrote:
> Your example of poor performance is one when the cpu performance is
> marginal to get exactly 30 fps processed and on the screen. The cpu
> overhead in 2.6 is slightly higher than 2.4 so a borderline case may
> be just pushed over.
>
"his" example is in fact mine. 2.4 ghz chew 25 fps. the total cpu load
is at 30-40% (depending on the selected deinterlacer algorithm).

> A program running as sched_fifo it will preempt absolutely everything
> regardless of how it behaves.
>
errm ... right. i paid too little attention to this "tiny" detail.
*blush*

now i hacked tvtime to simply ignore v4l2 ... and guess what? it works
...
so the new theory is, that tvtime has some problem with v4l2 input
buffering ...

greetings

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