3 files changed, 30 insertions, 0 deletions
diff --git a/benchmark/bm_hash_shift_u16.rb b/benchmark/bm_hash_shift_u16.rb
new file mode 100644
index 0000000000..ec800d0342
--- /dev/null
+++ b/benchmark/bm_hash_shift_u16.rb
@@ -0,0 +1,10 @@
+h = {}
+
+(16384..65536).each do |i|
+  h[i] = nil
+end
+
+300000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/bm_hash_shift_u24.rb b/benchmark/bm_hash_shift_u24.rb
new file mode 100644
index 0000000000..de4e0fa696
--- /dev/null
+++ b/benchmark/bm_hash_shift_u24.rb
@@ -0,0 +1,10 @@
+h = {}
+
+(0xff4000..0xffffff).each do |i|
+  h[i] = nil
+end
+
+300000.times do
+  k, v = h.shift
+  h[k] = v
+end
diff --git a/benchmark/bm_hash_shift_u32.rb b/benchmark/bm_hash_shift_u32.rb
new file mode 100644
index 0000000000..656aa55583
--- /dev/null
+++ b/benchmark/bm_hash_shift_u32.rb
@@ -0,0 +1,10 @@
+h = {}
+
+(0xffff4000..0xffffffff).each do |i|
+  h[i] = nil
+end
+
+300000.times do
+  k, v = h.shift
+  h[k] = v
+end