From: Eric Wong <normalperson@...>
Date: 2017-10-18T00:16:45+00:00
Subject: [ruby-core:83325] Re: [Ruby trunk Feature#13996] [PATCH] file.c: apply2files releases GVL

I wrote:
> > https://bugs.ruby-lang.org/issues/13996
> 
> Updated patch with benchmark, now:
> 
>     https://80x24.org/spew/20171012191218.1624-1-e@80x24.org/raw
> 
> This hurts performance on fast filesystem, but these methods
> are unlikely to be performance bottlenecks and (IMHO) avoiding
> pathological slowdowns and stalls are more important.

Will commit in a few days...

At least on Linux, GVL performance may be slightly improved:

  https://bugs.ruby-lang.org/issues/13697

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