[linux-dvb] more than 6 dvb cards possible?

Ali H.M. Hoseini alihmh at gmail.com
Wed Feb 14 14:20:50 CET 2007


Janne Grunau wrote:
> On Wednesday 14 February 2007 13:09:33 Ali H.M. Hoseini wrote:
>   
>> Hi all,
>>
>> I've searched this mailing list, and internet, and found that is
>> possible to have 6 dvb cards simultaneously with newer linux kerenls.
>> But is it possible to have more than 6 dvb cards? for example 8 dvb
>> cards?
>>     
>
> Eight adapters should work out of the box. More adapters may work if you 
> increase the DVB_MAX_ADAPTERS define in 
> drivers/media/dvb/dvb-core/dvbdev.c.
>
> Applications may have their own limit. MythTV for example has also a 
> limit of 8 DVB adapters per backend.
>
>   
>> I've an industrial pc from icp electronics that lets me to install up
>> to 13 pci cards. ( It has active backplane).
>>     
>
> Please note that more than ten typical DVB-S or DVB-C multiplexes 
> (~50mbit/s) may saturate a single 32bit/33mhz PCI bus. I hope that they 
> use more than one PCI bus for 13 slots.
>   
I heard that cards such as skystar 2 have hardware pid filters. Does it
mean that this prevent pci bus saturation, by aligning that filters to a
one or two pids?

> HTH Janne
>
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>   




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