https://git.ruby-lang.org/ruby.git/commit/?id=8821a0de0e

From 8821a0de0eb412dd61066ca6e5fea0eb331ae546 Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@r...>
Date: Thu, 4 Nov 2021 14:14:52 +0900
Subject: test/ruby/test_gc_compact.rb: Do not run on s390x

The compaction tests get stuck randomly on s390x for unknown reason.

http://rubyci.s3.amazonaws.com/s390x/ruby-master/log/20211104T030003Z.fail.html.gz
```
[13715/21145] TestGCCompact#test_gc_compact_statstimeout: output interval exceeds 1800.0 seconds.
```

We spent some time to investigate this issue, but we can't figure out
why, and it is unlikely that we'll be able to fix it anytime soon.

This random failure makes the CI unuseful, so tentatively we suppress
this test for a while. A contribution from those who are familiar with
s390x is welcome.
---
 test/ruby/test_gc_compact.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/ruby/test_gc_compact.rb b/test/ruby/test_gc_compact.rb
index 46683d0ed57..753c02db31f 100644
--- a/test/ruby/test_gc_compact.rb
+++ b/test/ruby/test_gc_compact.rb
@@ -3,6 +3,11 @@ require 'test/unit' https://github.com/ruby/ruby/blob/trunk/test/ruby/test_gc_compact.rb#L3
 require 'fiddle'
 require 'etc'
 
+if RUBY_PLATFORM =~ /s390x/
+  puts "Currently, it is known that the compaction does not work well on s390x; contribution is welcome https://github.com/ruby/ruby/pull/XXXX"
+  return
+end
+
 class TestGCCompact < Test::Unit::TestCase
   module SupportsCompact
     def setup
-- 
cgit v1.2.1


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