Re: [PATCH] improve rwsem scalability (was Re: [CFT][RFC] HT scheduler)

From: Nick Piggin
Date: Fri Dec 12 2003 - 21:16:36 EST




Ingo Molnar wrote:

On Fri, 12 Dec 2003, Nick Piggin wrote:


getting contended. The following graph is a best of 3 runs average.
http://www.kerneltrap.org/~npiggin/rwsem.png


the graphs are too noise to be conclusive.


The part to look at is the tail. I need to do some more testing to see
if its significant.


yes, could you go from 150 to 300?


The benchmark dies at 160 rooms unfortunately. Probably something in the JVM.

I'll do a larger number of runs around the 130-150 mark.


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