Removed benchmark suite and its documentation

The rationale for this can be found in
https://gitlab.com/gitlab-org/gitlab-ce/issues/13718 but in short the
benchmark suite no longer serves a good purpose now that we have proper
production monitoring in place.

Fixes gitlab-org/gitlab-ce#13718

1 files changed, 0 insertions, 61 deletions

diff --git a/spec/support/matchers/benchmark_matchers.rb b/spec/support/matchers/benchmark_matchers.rb
deleted file mode 100644
index 84f655c2119..00000000000
--- a/spec/support/matchers/benchmark_matchers.rb
+++ /dev/null
@@ -1,61 +0,0 @@
-module BenchmarkMatchers
-  extend RSpec::Matchers::DSL
-
-  def self.included(into)
-    into.extend(ClassMethods)
-  end
-
-  matcher :iterate_per_second do |min_iterations|
-    supports_block_expectations
-
-    match do |block|
-      @max_stddev ||= 30
-
-      @entry = benchmark(&block)
-
-      expect(@entry.ips).to be >= min_iterations
-      expect(@entry.stddev_percentage).to be <= @max_stddev
-    end
-
-    chain :with_maximum_stddev do |value|
-      @max_stddev = value
-    end
-
-    description do
-      "run at least #{min_iterations} iterations per second"
-    end
-
-    failure_message do
-      ips    = @entry.ips.round(2)
-      stddev = @entry.stddev_percentage.round(2)
-
-      "expected at least #{min_iterations} iterations per second " \
-        "with a maximum stddev of #{@max_stddev}%, instead of " \
-        "#{ips} iterations per second with a stddev of #{stddev}%"
-    end
-  end
-
-  # Benchmarks the given block and returns a Benchmark::IPS::Report::Entry.
-  def benchmark(&block)
-    report = Benchmark.ips(quiet: true) do |bench|
-      bench.report do
-        instance_eval(&block)
-      end
-    end
-
-    report.entries[0]
-  end
-
-  module ClassMethods
-    # Wraps around rspec's subject method so you can write:
-    #
-    #     benchmark_subject { SomeClass.some_method }
-    #
-    # instead of:
-    #
-    #     subject { -> { SomeClass.some_method } }
-    def benchmark_subject(&block)
-      subject { block }
-    end
-  end
-end