[mythtv-users] backend takes 100% CPU recording DVB-T

Stephen Williams stephen.gw at gmail.com
Thu Apr 13 12:49:33 UTC 2006

On 4/13/06, M <martin at luminoussheep.net> wrote:
> Might be that EIT only started working in the newer drivers for your card.
> I wouldn't get too hung up on this tracking down versions etc as there do
> appear to be known issues with the EIT as shipped in 0.19.
> I see some discussion on the dev mailing list indicating the EIT problems
> are being fixed for 0.20. I guess we should check and feed back especially
> as the last message I saw said that the compilation option of turning off
> EIT was being taken out (i.e. our only know fix to the current problem is
> about to disappear).

EIT has been working for a long time now (can't remember when, maybe
as far back as 0.16). I'd spot if it wasn't working as it's the only
way I can receive TV listings ;)

I think that the EIT thing is a red-herring here. Something (looking
like a possible driver / myth interaction) has caused a massive spike
in cpu usage, it's there with a 2.6.15 kernel and not there with a
2.6.8 kernel. In 0.19-fixes EIT consumes a not insignificant amount of
cpu but nothing drastic. Chances are that disabling it has brought you
back under 100% cpu usage but I doubt you're back to the normal levels
(i.e. there's a good possibility that you've fixed the symptom but not
the cause).

Out of interest, what kernel / dvb driver issue are you using, and
what is your cpu usage whilst recording now that you've disabled EIT?

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