Re: kernel performance update - 2.6.14-rc3

[Andi Kleen]

"Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> writes:

> Even though
> softirq is invoked at the end of dev_queue_xmit() via local_bh_enable(),
> not all execution of softirq will result a __wake_up().  With higher
> HZ rate, timer interrupt is more frequent and thus more softirq
> invocation and leads to more __wake_up(), which then takes us to higher
> throughput because cpu spend less time in idle.  

This sounds like a serious bug somewhere if true.

-Andi

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