23 Jul
2009
23 Jul
'09
7:44 p.m.
sh0099 a écrit :
i have to say that i also have not so nice performance
with jack on my
eeepc 4g with a ubuntu-eee. does anybody knows if there is a rt kernel
which works well with the eeepc 4g?
i currently run ubuntu-eee 8.04.
I use currently ubuntu 9.à4 and the pr-packaged
rt-kernel works, even
with networking. But xruns are still there even with RT prio 100 for jackd.
ben schrieb:
Clemens Ladisch a écrit :
Thank you for the explanation on IRQs.
Benoît
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http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user ben wrote:
OK. I saw some applications behave better than some other.
I'll RTFM on buffer/period sizes when the application alow to tweak it,
even if this can increase latency.
i own an eeepc 4G (701) but ALSA makes a lot for
underrun withe de Intel
soundcard (snd_hda_intel). Surprisingly, using the OSS emulation works
better.
The OSS emulation uses the same ALSA API internally; you should get the
same behaviour if you configure your application, whatever it is, to use
the same buffer/period sizes for ALSA as it uses for OSS.
Is it
possible to tell to snd_hda_intel to force the use of the
soundcard in a better IRQ ?
No, I/O-APIC interrupts (above 15) are hardwired.
Best regards,
Clemens