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Subject: Re: question about softirqs
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Ingo Molnar <mingo@elte.hu>
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Date: Tue, 12 May 2009 11:32:41 +0200
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On Tue, 2009-05-12 at 11:23 +0200, Ingo Molnar wrote:
> 
> Yeah, that would be "nice". A single IRQ thread plus the process 
> context(s) doing networking might perform well.
> 
> Multiple IRQ threads (softirq and hardirq threads mixed) i'm not so 
> sure about - it's extra context-switching cost.

Sure, that was implied by the getting rid of softirqs ;-), on -rt we
currently suffer this hardirq/softirq thread ping-pong, it sucks.