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diff --git a/benchmark/vm_thread_sized_queue4.yml b/benchmark/vm_thread_sized_queue4.yml
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+benchmark:
+ vm_thread_sized_queue4: |
+ require 'thread'
+ # many producers, many consumers
+ nr = 1_000_000
+ n = 10
+ m = 10
+ q = Thread::SizedQueue.new(100)
+ consumers = n.times.map do
+ Thread.new do
+ while q.pop
+ # consuming
+ end
+ end
+ end
+
+ producers = m.times.map do
+ Thread.new do
+ while nr > 0
+ q.push true
+ nr -= 1
+ end
+ end
+ end
+
+ producers.each(&:join)
+ n.times { q.push nil }
+ consumers.each(&:join)
+loop_count: 1