Re: Dropped frames in video capture process

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 5 Nov 1998 14:55:55 +0000 (GMT)


> frames are coming at a rate of 60Hz, and there are 4 buffers, if
> interrupt is not serviced within 64 msec frame would be lost. First of
> all - is this normal for Linux to have a latency over 50msec, or
> something else is wrong on my system (K6,233MHZ).

Dangerous assumption here - who says the IRQ latency is the problem. Suppose
you are in fact losing frames because the Xserver is creating enough PCI
activity to make the capture device fifo overrun ?

What errors is the chip reporting

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