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Date: Mon, 26 Jun 2017 02:21:36 +0000
From: Eric Wong <e@80x24.org>
To: unicorn-public@bogomips.org
Subject: nakayoshi_fork for CoW memory use reductions
Message-ID: <20170626022136.GA27608@whir>
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List-Id: <unicorn-public@bogomips.org>

I thought I posted about when I first heard about it, but
apparently not.

It's a RubyGem which should help with CoW memory savings
for Ruby 2.2+ due to the introduction of generational GC.

	https://rubygems.org/gems/nakayoshi_fork
	git clone https://github.com/ko1/nakayoshi_fork.git

You can also get a similar effect calling GC.start(full_mark: false)
four times in the unicorn before_fork hook, but nakayoshi_fork
is a bit more sophisticated in that it stops looping when it knows
it can't proceed.

Anyways, I was reminded of this while responding to
	https://bugs.ruby-lang.org/issues/11101
which may affect some unicorn users, too.