snd_emu10k1 tremendous interrupt load?
rink at FreeBSD.org
Sat Feb 17 10:51:14 UTC 2007
On Sat, Feb 10, 2007 at 10:02:45PM +0300, Yuriy Tsibizov wrote:
> >Hi people,
> >Over the last few days, my CURRENT box has started to slow down to a
> >crawl. top(1) reports most CPU load is spent on interrupts, and a quick
> >vmstat -i to support this completely:
> >interrupt total rate
> >irq1: atkbd0 1631 0
> >irq15: ata1 14197 2
> >irq16: pcm0 1056243398 160109
> Rate for emu10k1 cards should be arount 48 interrupts/s. Do you record or
> play sound?
Switching snd_emu10kx1 doesn't make difference. In fact, all of a
sudden, the onboard fxp(4) (which I don't use) shows exactly the same
behaviour (and I have seen this happen the nVidia driver as well). This
makes me believe the problems is elsewhere, and not in emu10k1/emu10kx
I will update my machine to the latest CURRENT and see how that goes.
Could the recently-added MSI changes perhaps contribute to this odd
behaviour? It looks to me either my machine is broken (even though
Windows XP works fine on it), or something changed in CURRENT.
To be continued...
Rink P.W. Springer - http://rink.nu
"It is such a quiet thing, to fall. But yet a far more terrible thing,
to admit it." - Darth Traya
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