1 files changed, 17 insertions, 0 deletions
diff --git a/benchmark/bm_vm4_pipe.rb b/benchmark/bm_vm4_pipe.rb
new file mode 100644
index 0000000000..d33c5223a9
--- /dev/null
+++ b/benchmark/bm_vm4_pipe.rb
@@ -0,0 +1,17 @@
+# Mesure small and plenty pipe read/write.
+# A performance may depend on GVL implementation.
+
+lmax = 1_000_000
+r, w = IO.pipe
+[Thread.new{
+  lmax.times{
+    w.write('a')
+  }
+  p "w:exit"
+}, Thread.new{
+  lmax.times{
+    r.read(1)
+  }
+  p "r:exit"
+}].each{|t| t.join}
+