From fd089e3e95ebbded14c9a2d51fce376fbbbf289d Mon Sep 17 00:00:00 2001
From: John Hawthorn <john@hawthorn.email>
Date: Sat, 7 Feb 2026 17:50:54 -0800
Subject: Revert "Wake timer to create new SNT when needed for dedicated task
 (#16009)"

This reverts commit 7b3370a5579956404d742a2e104d72e7c89480e4.
---
 test/ruby/test_ractor.rb | 39 ---------------------------------------
 1 file changed, 39 deletions(-)

(limited to 'test/ruby')

diff --git a/test/ruby/test_ractor.rb b/test/ruby/test_ractor.rb
index d449f9f814..6ae511217a 100644
--- a/test/ruby/test_ractor.rb
+++ b/test/ruby/test_ractor.rb
@@ -201,45 +201,6 @@ class TestRactor < Test::Unit::TestCase
     RUBY
   end
 
-  def test_timer_thread_create_snt_for_dedicated_task
-    omit "timer thread works differently" if windows?
-    omit "test relies on this as a best-effort safety mechanism" unless defined?(Process::WNOHANG)
-    assert_separately([{ "RUBY_MAX_CPU" => "2" }], <<~'RUBY', timeout: 30)
-      $VERBOSE = nil
-      CHILD_PID = 0
-
-      rs = []
-      2.times do |i|
-        rs << Ractor.new(i) do |j|
-          if j == 0
-            pid = spawn("sleep 60", close_others: true)
-            Object.const_set(:CHILD_PID, pid)
-            Process.waitpid(pid) # block forever (dedicated task)
-          else
-            while CHILD_PID == 0
-              sleep 1 # make sure first ractor blocks forever first (this is what we're testing)
-            end
-            1_000.times do
-              [nil] * 100
-            end
-          end
-        end
-      end
-
-      rs.last.join
-      begin
-        result = Process.waitpid(CHILD_PID, Process::WNOHANG)
-      rescue Errno::ECHILD, Errno::ESRCH
-        # If it's somehow not a child (not running?), don't send it a signal
-      else
-        if result.nil?
-          Process.kill('KILL', CHILD_PID) rescue nil
-        end
-      end
-      rs.first.join # reap
-    RUBY
-  end
-
   def test_symbol_proc_is_shareable
     pr = :symbol.to_proc
     assert_make_shareable(pr)
-- 
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