On Thu, Aug 31, 2006 at 05:24:30PM +0400, Manu Abraham wrote:
> Usually in the typical application we have (where latency is an issue),
> most probably many of the people have a saturated PCI bus. In most
> cases, the IPTV guys have such a scenario. Say > 6 or 7 DVB adapters and
> the latency goes very high.
Sure, when you are pushing your hardware to the maximum, you should
expect issues like this. I agree we should do as best as we can for
things like this, but when you over-subscribe your PCI bus by doing
something like this, I really recommend just buying some hardware that
will work better for you (separate PCI busses, etc. The hardware is out
there to do this properly.)
> What i have seen is that when the bus gets saturated, the CPU usage
> shoots of rather abnormally.
As is to be expected.
> When the latency goes higher, the resultant stream is useless and
> packets needs to be dropped, eventually that results in Transport
> Stream discontinuities.
Sure, that's understandable.
> Currently we already have a latency issue, based on the loud cries
> from some people.
Trying to do things the hardware is not ment to do, should not result in
cries from users :)
thanks,
greg k-h
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