Re: ksoftirqd_CPU0 spinning in 2.4.21-pre3

[Ben Greear <greearb@candelatech.com>]

Robert Olsson wrote:
> Ben Greear writes:
>  > I happened to notice that my ksoftirqd_CPU0 process started spinning
>  > at 99% CPU when I plugged in the ports to a tulip NIC.  I didn't see
>  > any significant amount of interrupts when I looked at /proc/interrupts,
>  > and there was no traffic running.
>  > 
>  > However, this is also running a hacked up tulip-napi driver, so it
>  > could very well be my problem.  I have not seen this on any other kernel
>  > in several months though...
>  > 
>  > Anyway, if anyone has seen this, I'd like to know.  Otherwise, I'll blame
>  > my code and start poking at things...
> 
>  Well it can be normal operation if box is highly loaded...

There was zero network load on the box.  I think there must be a bug in
my napi-ization of the tulip driver.  Since I coppied it almost verbatim
from your stuff, you might want to check too :)

Ben

-- 
Ben Greear <greearb@candelatech.com>       <Ben_Greear AT excite.com>
President of Candela Technologies Inc      http://www.candelatech.com
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