From c25f653047a04156772ec19ef5f7f5899518a378 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Mon, 3 Jun 2024 20:18:28 +0900
Subject: [PATCH] [DOC] man: Add environment variable
 RUBY_SHARED_FIBER_POOL_FREE_STACKS

---
 man/ruby.1 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/man/ruby.1 b/man/ruby.1
index c5152d1a07..eddf0e21e8 100644
--- a/man/ruby.1
+++ b/man/ruby.1
@@ -655,6 +655,11 @@ GC frequency but increasing malloc growth until RUBY_GC_OLDMALLOC_LIMIT_MAX
 is reached.
 Introduced in Ruby 2.1, default: 1.2, minimum: 1.0 (no growth)
 .Pp
+.It Ev RUBY_SHARED_FIBER_POOL_FREE_STACKS
+Frees stacks of pooled fibers, if set to 1.
+Do not free the stacks if set to 0.
+Introduced in Ruby 2.7, default: 1 (no growth)
+.Pp
 .El
 .Sh STACK SIZE ENVIRONMENT
 Stack size environment variables are implementation-dependent and