Re: [RFC PATCH RT] rwsem: The return of multi-reader PI rwsems

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On Fri, 11 Apr 2014 04:50:26 +0200
Mike Galbraith <umgwanakikbuti@xxxxxxxxx> wrote:

> Oh, there was another useful bit. 
> 
> 3.12.17-rt25       403991     384216     377786
>                    405466     394011     392850
> 
> 3.12.17-nopreempt  109049     186133     118766  !?!.. ew, TTWU_QUEUE
>                    350385     318786     367336  !TTWU_QUEUE
>                    326009     356939     378215  !TTWU_QUEUE
> 
> IPI == low-pass filter.

I'm sorry, but I don't have the foggiest clue to what the above means.

-- Steve
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