[linux-dvb] High CPU load in "top" due to budget_av slot polling

Oliver Endriss o.endriss at gmx.de
Sat Apr 12 02:11:26 CEST 2008


Robert Schedel wrote:
> Hello all,
> 
> meanwhile I also found old threads from August 2007 and earlier, named 
> "System load raises when budget_av is loaded" and "System load raises 
> when budget_av is loaded", which describe exactly the same issue. 
> However, both were written before the latest code changes.
> 
> The latest debi_done code change from November 2007 does not use any 
> DEBI_E checks anymore. To my understanding this SAA7146 event indicates 
>   DEBI errors like timeout via PCI and should be received by the driver 
>   much earlier than those 250ms (=end of cycle). Seems like I have to 
> play around with this myself.

IIRC there was a problem with the DEBI_E flag but I don't remember what
it was exactly.

> Time for a bugzilla ticket?

You can do this if you prefer (but this will neither fix the bug nor
have any other positive effect).

CU
Oliver

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