[snd_hda] Choppiness under high cpu - STABLE

Norberto Meijome freebsd at meijome.net
Tue May 29 06:39:55 UTC 2007

On Tue, 29 May 2007 13:15:03 +0800
Ariff Abdullah <ariff at FreeBSD.org> wrote:

> Those binary modules are actually sources from -current + future fixes
> which not easily MFCable. The specific snd_hda driver itself pretty
> much simmilar, but the other part especially buffering and latency
> improvements are quite different. There is no simple solution for this
> except to keep using those binary modules, or appplying patch from the
> "usuall" place.

I see - I imagined it had something to do with that - I now remember some older version of the code (as provided by you) that had the same issues.

> Anyway, you can try adjusting buffer size
> with "hint.pcm.0.buffersize" . Start with 4096, 8192, 16384, etc.. Use
> either kenv(8) and reload, or slap it into /boot/device.hints and
> reboot.

Thanks, I'll have a play and inform back :)


{Beto|Norberto|Numard} Meijome

"So limp of brain that for them to conceive an idea is to risk a haemorrhage. So limp of body that their purple dresses appear no more a dixative of housing nerves and sinews than when they hang suspended from their hooks"
   Mervin Peake, "Gormenghast", chap. 2, on the Earl's twin sisters

I speak for myself, not my employer. Contents may be hot. Slippery when wet. Reading disclaimers makes you go blind. Writing them is worse. You have been Warned.

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