Re: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00

From: Ingo Molnar
Date: Tue Jun 28 2005 - 06:17:20 EST



* Ingo Molnar <mingo@xxxxxxx> wrote:

> > Once, with VLC (viewing a 5mbit/s mcast/udp stream) and two burnP6
> > instances running, I was able to fire up top on the serial console and
> > found out that the IRQ thread for the ns83820 nic was using 99% of one
> > CPU.
>
> aha! that's an important clue. It seems you've got a screaming interrupt
> or some other loop in ns83820 irq handling. [...]

i just found and fixed a bug in -RT that could cause screaming
interrupts. Could you try the -50-28 (or any later) kernel, does it fix
the problem?

Ingo
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