Re: [patch 4/4] sched: Distangle worker accounting from rq->lock

[Ingo Molnar]

* Tejun Heo <tj@xxxxxxxxxx> wrote:

> The patch description is simply untrue.  It does affect how wq 
> behaves under heavy CPU load.  The effect might be perfectly okay 
> but more likely it will result in subtle suboptimal behaviors under 
> certain load situations which would be difficult to characterize 
> and track down.  Again, the trade off (mostly killing of 
> ttwu_local) could be okay but you can't get away with just claiming 
> "there's no harm".

Well, either it can be measured or not. If you can suggest a specific 
testing method to Thomas, please do.

Thanks,

	Ingo
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