[haiku-development] Re: Res: Scheduler algorithm improvements

2009/11/6 Fredrik Holmqvist <fredrik.holmqvist@xxxxxxxxx>:
> 2009/11/6 Urias McCullough <umccullough@xxxxxxxxx>:
>> I have read some people having problems with certain hardware - I have
>> always thought these are interrupt-sharing related issues, or a bug in
>> the driver perhaps. Not scheduler-related at all.
>
> Speculation isn't really help. We need more hard info. It is a
> confirmed problem on some hardware and until it's tracked down it can
> be anywhere that hinders the audio path. I have it on one of my two
> systems, but havn't managed to track it down yet.

Done a lot of testing now:
* Disabled all debugging (to serial and debug info on syslog) -> No change.
* Used #define KDEBUG_LEVEL 0 -> No change
* Removed all drivers except those necessary (isa, pci, scsi, ata,
vesa, usb, hda and a few others left) -> No change
* Updated Rudolf's patch from http://dev.haiku-os.org/ticket/3356 to
current -> No change.

I guess I'll try Cian's suggested patch here:
http://www.freelists.org/post/haiku/HDA-audio-driver-more-testing-possible-patch
as well. I'm not really sure what to do else except hunting sections
with interrupts disabled and proof-reading mediakit code.

/Fredrik Holmqvist, TQH

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