diff --git a/benchmarks/benchmark.rb b/benchmarks/benchmark.rb
index 813de750..a8062298 100755
--- a/benchmarks/benchmark.rb
+++ b/benchmarks/benchmark.rb
@@ -2,11 +2,60 @@
 
 # frozen_string_literal: true
 
+unless ENV['COVERAGE'].nil?
+  require 'simplecov'
+
+  SimpleCov.start
+  SimpleCov.command_name 'Bench'
+end
+
 require_relative 'benchmark_sample'
 require 'benchmark'
 
+ITERATIONS = 5_000
+
+Foo.create! name: 'Ciao'
+
+first_foo = Foo.first
+
 Benchmark.bmbm(30) do |x|
-  x.report('benchmark_sample') do
-    run_benchmark_sample
+  x.report('.merge') do
+    ITERATIONS.times { Foo.all.merge(Foo.all) }
+  end
+
+  x.report('.first') do
+    ITERATIONS.times { Foo.first }
+  end
+
+  x.report('.last') do
+    ITERATIONS.times { Foo.last }
+  end
+
+  x.report('.as_of.first') do
+    ITERATIONS.times { Foo.as_of(Time.now).first }
+  end
+
+  x.report('History.merge') do
+    ITERATIONS.times { Foo::History.all.merge(Foo::History.all) }
+  end
+
+  x.report('History.first') do
+    ITERATIONS.times { Foo::History.first }
+  end
+
+  x.report('History.last') do
+    ITERATIONS.times { Foo::History.last }
+  end
+
+  x.report('#history.first') do
+    ITERATIONS.times { first_foo.history.first }
+  end
+
+  x.report('#history.last') do
+    ITERATIONS.times { first_foo.history.last }
+  end
+
+  x.report('#as_of') do
+    ITERATIONS.times { first_foo.as_of(Time.now) }
   end
 end