Re: [PATCH 1/1] via-rhine: Fix hanging with high CPU load onlow-end broads.
From: Stephen Hemminger
Date: Wed Dec 28 2011 - 13:17:20 EST
Looks like the hardware isn't really disabling interrupts correctly to support
NAPI. NAPI is supposed to be friendly and under load the work should move to
ksoftirqd. I suspect the IRQ management in this driver is borked.
There is some stupid spin loops in the IRQ handler that happen when looking for
Tx IRQ. I would run with debug set and see if this is triggering.
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