SiS7012(snd_ich) and interrupt storms?
andreas.kohn at gmx.net
Tue Aug 17 01:12:40 PDT 2004
I installed FreeBSD -CURRENT on a friend's laptop. The laptop has a SiS
7012 audio chip. Whenever I load snd_ich, the machine instantly uses
~20% cpu power for interrupt handling of irq10:pcm (according to top and
systat). Unloading the module brings everything back to normal.
This is /dev/sndstat when the snd_ich is loaded:
FreeBSD Audio Driver (newpcm)
pcm0: <SiS 7012> at io 0xdc00, 0xd800 irq 10 bufsz 16384 kld snd_ich
(1p/1r/0v channels duplex default)
none1 at pci0:2:7: class=0x040100 card=0x52031584 chip=0x70121039 rev=0xa0
vendor = 'Silicon Integrated Systems (SiS)'
device = 'SiS7012 PCI Audio Accelerator'
class = multimedia
subclass = audio
Are there any known problems in snd_ich that I should be aware of?
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