On Fri, Jan 8, 2016 at 3:15 PM, Andy Lutomirski <luto@xxxxxxxxxx> wrote:
>
> Please play around and suggest (and run?) good benchmarks. It seems
> to save around 100ns on cross-process context switches for me.
Interesting. There was reportedly (I never saw it) a test-patch to use
pcids inside of Intel a couple of years ago, and it never got outside
because it didn't make a difference.
Either things have changed (newer hardware with more pcids perhaps?)
or you did a better job at it.
Linus
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