From: Eric Wong <normalperson@...>
Date: 2018-09-09T18:34:12+00:00
Subject: [ruby-core:88931] Re: [Ruby trunk Feature#15095] [PATCH] share VM stack between threads and fibers if identical

Koichi Sasada <ko1@atdot.net> wrote:
> On 2018/09/10 2:26, Eric Wong wrote:
> > Sorry, I mean they can share VM stack cache; not the in-use VM stack.
> 
> It makes sense.
> 
> But I remember that Fiber stack is smaller than Thread VM stack because of
> rough estimation (Fiber may not require a big stack). Does it okay?

Yes, cache will only be reused if fiber and thread VM stack size
match.  Maybe most users don't set them to the same value, but I
do when using fibers.

In the future, maybe we can make them the same in config to
minimize needless difference and simplify configs/documentation.
It will be a separate proposal.

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