Re: Process priority in 2.4.18 (RedHat 7.3)

[Andrew Morton]

Paul Faure wrote:
> 
> It would seem that it only occurs when running the application (that takes
> 100% of the CPU) as root.

That's because without root, the application cannot raise its
scheuling priority and it cannot change to realtime policy.

So the problem would appear to be that your networking *requires*
ksoftirqd services to function.  Either:

1) The driver is bust - its hard_start_xmit() function is failing
   frequently, and relying on ksoftirqd to get things done (I think;
   it's been a while).  Or

2) Something is wrong with the ksoftirqd design.  Or

3) Red Hat fiddled with ksoftirqd and broke it.

I'd be inclined to suspect 1).

> As for testing it with other cards, I only have this one card.
> 

That's a shame.

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