Re: [PATCH] Read-Copy Update 2.5.34

From: Robert Love (rml@tech9.net)
Date: Wed Sep 11 2002 - 09:03:28 EST


On Wed, 2002-09-11 at 08:20, Dipankar Sarma wrote:

> vanilla-2.5.34 rcu_poll-2.5.34
> -------------- ---------------
> 80 , 40 , 1.593 1.569
> 112 , 40 , 1.544 1.554
> 144 , 40 , 1.595 1.552
> 176 , 40 , 1.568 1.605
> 198 , 40 , 1.562 1.577
> 230 , 40 , 1.563 1.583
> 244 , 40 , 1.671 1.638
>
> Not sure how reliable these numbers are.

And how bad is the performance drop from 2.5.34-preempt to
2.5.34-preempt-rcu?

I am glad you guys support kernel preemption (not that you have a chance
at this point) but I hope it was not an afterthought.

        Robert Love

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