omigod look at that graph.
Excuse me while I get frustrated. Will someone *please* send that
damn patch to marcelo@conectiva.com.br?
(It can be improved further by putting padding *behind* the lock
but hey).
> ...
>
> With Anton's patch, the number of ctx-swtch/sec drops by around 3000
> from avg of 9000 (for 17-pre2+ext3) to avg of 6000 (with anton) as seen
> by vmstat 1
Really? The spinlock cacheline alignment alone made that
difference? I wonder why.
Thanks for testing.
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