[linux-dvb] Re: lots of TS continuity errors + SuSE 9.1

[Matthias Bodenbinder <matthias@bodenbinder.de>]

On Sunday 21 November 2004 01:57, Hamish Moffatt wrote:
> On Sat, Nov 20, 2004 at 09:20:03PM +0100, Matthias Bodenbinder wrote:
> > I did one more test with several channels. It seems that the errors occur
> > mainly on the channels: ZDF, RTL, SuperRTL and NTV.
> >
> > How are those channels related? Any idea?
>
> Maybe those have the highest data rate, which would exacerbate the
> problem. dvbsnoop with "-s bandwidth" can monitor the data rate of a
> channel; it would be interesting to compare the channels that are giving
> you problems with ones that work.
>
> Hamish

Hello Hamish,

I tried dvbsnoop and it gives interesting results. On most channels it says:

packets read:   3/(1920)   d_time:  0.187 s  =    24.128 kbit/s   (Avrg:     
7.643 kbit/s)
packets read:   3/(1923)   d_time:  0.200 s  =    22.560 kbit/s   (Avrg:     
7.651 kbit/s)
packets read:   3/(1926)   d_time:  0.201 s  =    22.448 kbit/s   (Avrg:     
7.659 kbit/s)

but on ZDF for example it says:

packets read:   3/(168)   d_time:  0.020 s  =   225.600 kbit/s   (Avrg:     
7.120 kbit/s)
packets read:   3/(171)   d_time:  0.020 s  =   225.600 kbit/s   (Avrg:     
7.243 kbit/s)
packets read:   3/(174)   d_time:  0.020 s  =   225.600 kbit/s   (Avrg:     
7.366 kbit/s)
and it takes much longer to scan.

This output was generated with channels.conf entry:
ZDF:11954:h:S19.2E:27500:110:120:130:0:28006:0:0:0

I have the same big numbers with:
SAT1 (150.400 kbit/s), Pro7 (150.400 kbit/s), Kabel 1(150.400 kbit/s), 
KIKA (225.600 kbit/s), N24 (150.400 kbit/s), EURONEWS (322.286 kbit/s),
3SAT (237.474 kbit/s), ZDFInfo (225.600 kbit/s), ZDFTheater (225.600 kbit/s), 
ZDFDoku (237.474 kbit/s), DSF (155.586 kbit/s), Eurosport (237.474 kbit/s), 

Interesting to see that the Avrg values remain the same with ca. 5-7 kbit/s. 
What does that tell me? Why wasnt that a problem with SuSE 8.x and kernel 2.4?
How can I change the data rate?

Matthias