hardcode-dev · IgorArkhipov · Oct 15, 2023 · Oct 15, 2023 · Oct 15, 2023 · Oct 16, 2023
diff --git a/assert-performance.rb b/assert-performance.rb
@@ -0,0 +1,35 @@
+require 'rspec-benchmark'
+require_relative 'task-1'
+
+RSpec.configure do |config|
+  config.include RSpec::Benchmark::Matchers
+end
+
+describe 'Performance' do
+  describe 'work' do
+    # 100 lines under 0.32 milliseconds
+    it 'should work under 0.32 milliseconds' do
+      expect { work('data100.txt') }.to perform_under(0.32).ms.warmup(2).times.sample(10).times
+    end
+
+    # 1000 lines under 1.95 milliseconds
+    it 'should work under 2 milliseconds' do
+      expect { work('data1000.txt') }.to perform_under(1.95).ms.warmup(2).times.sample(10).times
+    end
+
+    # 10000 lines under 20 milliseconds
+    it 'should work under 20 milliseconds' do
+      expect { work('data10000.txt') }.to perform_under(20).ms.warmup(2).times.sample(10).times
+    end
+
+    let(:measurement_time_seconds) { 1 }
+    let(:warmup_time_seconds) { 0.2 }
+    it 'works faster than 3550 ips' do
+      expect { work('data100.txt') }.to perform_at_least(3550).within(measurement_time_seconds).warmup(warmup_time_seconds).ips
+    end
+
+    it 'performs linear' do
+      expect { |n, _i| work("data#{n}.txt") }.to perform_linear.in_range(1000, 8000).ratio(2)
+    end
+  end
+end
diff --git a/benchmark.rb b/benchmark.rb
@@ -0,0 +1,18 @@
+require 'benchmark'
+require_relative 'task-1'
+
+# GC.disable
+puts 'Started'
+time = Benchmark.realtime do
+  work('data_large.txt')
+end
+puts "Finished in #{time.round(2)}"
+
+# Iteration 0: measurement without any changes = 0.72 seconds
+# Iteration 1: measurement with changes for Array.select = 0.1 seconds
+# Iteration 2: measurement with changes for collect_stats_from_users = 0.1 seconds
+# Iteration 3: measurement with changes for all? = 0.07 seconds
+# Iteration 4: measurement with changes for split = 0.04 seconds
+# Iteration 5: measurement with changes for Date = 0.02 seconds
+# Iteration 6: measurement with changes for remaining map = 0.02 seconds
+# Iteration 7: measurement with changes for remaining array append = 0.02 seconds
diff --git a/case-study.md b/case-study.md
diff --git a/data100.txt b/data100.txt
@@ -0,0 +1,100 @@
+user,0,Hazel,Margarete,19
+session,0,0,Internet Explorer 50,81,2018-02-01
+session,0,1,Safari 27,88,2017-10-28
+session,0,2,Firefox 13,92,2016-11-02
+session,0,3,Internet Explorer 40,37,2017-05-31
+session,0,4,Internet Explorer 16,37,2017-11-21
+session,0,5,Safari 19,22,2017-11-30
+session,0,6,Chrome 31,74,2016-08-22
+session,0,7,Firefox 46,76,2019-02-04
+user,1,Wilfredo,Louetta,40
+session,1,0,Firefox 38,68,2018-04-24
+session,1,1,Internet Explorer 41,27,2016-09-06
+session,1,2,Internet Explorer 1,74,2017-01-05
+session,1,3,Firefox 47,28,2017-06-09
+session,1,4,Internet Explorer 22,98,2016-11-03
+user,2,Cecil,Rosalba,44
+session,2,0,Safari 26,96,2018-08-20
+session,2,1,Internet Explorer 10,3,2019-01-03
+session,2,2,Internet Explorer 47,52,2016-07-31
+session,2,3,Safari 34,37,2017-09-14
+session,2,4,Internet Explorer 17,22,2016-07-10
+session,2,5,Firefox 26,76,2017-02-06
+session,2,6,Chrome 14,88,2017-02-19
+session,2,7,Safari 31,113,2018-04-12
+session,2,8,Chrome 20,72,2016-09-04
+session,2,9,Safari 13,14,2017-07-26
+user,3,Kieth,Noble,20
+session,3,0,Safari 23,1,2018-02-19
+session,3,1,Internet Explorer 24,92,2018-05-15
+session,3,2,Chrome 6,91,2017-01-06
+session,3,3,Internet Explorer 47,7,2016-09-01
+session,3,4,Firefox 4,20,2017-03-22
+session,3,5,Internet Explorer 23,17,2016-12-02
+session,3,6,Internet Explorer 5,91,2017-12-29
+session,3,7,Internet Explorer 23,2,2017-03-17
+user,4,Corie,Erika,32
+session,4,0,Chrome 11,49,2019-02-05
+session,4,1,Safari 44,18,2017-09-01
+session,4,2,Firefox 32,88,2017-06-01
+session,4,3,Chrome 28,82,2018-03-18
+session,4,4,Firefox 38,36,2018-06-11
+session,4,5,Safari 14,11,2017-04-06
+session,4,6,Safari 27,116,2017-05-30
+session,4,7,Safari 24,36,2018-06-12
+session,4,8,Firefox 3,28,2018-01-05
+user,5,Lou,Lean,39
+session,5,0,Internet Explorer 42,74,2017-08-20
+session,5,1,Internet Explorer 1,80,2018-11-22
+session,5,2,Chrome 18,105,2018-01-17
+user,6,Deedra,Minta,44
+session,6,0,Firefox 32,27,2017-07-07
+session,6,1,Firefox 45,48,2017-07-22
+session,6,2,Safari 33,55,2018-07-09
+session,6,3,Safari 1,14,2016-11-08
+session,6,4,Firefox 39,18,2017-02-06
+session,6,5,Safari 12,52,2016-07-18
+session,6,6,Firefox 18,84,2016-08-16
+session,6,7,Chrome 2,114,2016-10-18
+user,7,Loria,Vernetta,68
+session,7,0,Safari 14,51,2019-01-25
+session,7,1,Internet Explorer 29,88,2016-10-12
+session,7,2,Firefox 32,55,2016-11-15
+session,7,3,Safari 4,20,2016-11-19
+session,7,4,Chrome 42,95,2018-02-10
+session,7,5,Safari 36,88,2018-03-30
+session,7,6,Safari 7,74,2017-05-27
+session,7,7,Safari 18,67,2017-02-22
+session,7,8,Chrome 24,26,2018-11-01
+user,8,Abdul,Venessa,55
+session,8,0,Internet Explorer 1,60,2018-12-02
+session,8,1,Chrome 3,63,2016-10-02
+session,8,2,Safari 41,99,2017-01-12
+session,8,3,Firefox 13,69,2017-04-17
+session,8,4,Safari 31,115,2018-04-08
+session,8,5,Chrome 30,77,2019-01-28
+session,8,6,Safari 43,56,2017-05-07
+user,9,Brooks,Janae,6
+session,9,0,Internet Explorer 36,11,2018-08-11
+user,10,Rey,Coy,95
+session,10,0,Internet Explorer 27,115,2017-08-05
+session,10,1,Internet Explorer 21,119,2018-11-15
+session,10,2,Internet Explorer 2,0,2016-06-10
+session,10,3,Safari 13,44,2018-04-07
+session,10,4,Firefox 37,26,2018-05-04
+user,11,Cyrus,Danyel,41
+session,11,0,Firefox 34,118,2016-10-14
+session,11,1,Internet Explorer 34,45,2017-10-10
+session,11,2,Internet Explorer 38,70,2017-07-10
+user,12,Valentin,Emilio,21
+session,12,0,Chrome 13,28,2018-04-23
+session,12,1,Firefox 35,17,2018-11-29
+session,12,2,Firefox 19,68,2018-05-03
+session,12,3,Internet Explorer 14,2,2016-09-18
+session,12,4,Firefox 15,97,2018-04-15
+session,12,5,Safari 26,40,2016-06-13
+user,13,Mitchell,Hobert,78
+session,13,0,Internet Explorer 32,89,2019-02-07
+session,13,1,Firefox 17,0,2017-11-05
+session,13,2,Chrome 17,117,2018-12-12
+session,13,3,Firefox 28,3,2016-12-01