Discourse Bench Perf

gistfile1.txt

Comparisons: 

Categories (2.7 -> 3.0 -> 3.1 -> 3.1 + YJIT)

55 -> 56 -> 54 -> 50

Home page

96 -> 98 -> 92 -> 82

Topic

46 -> 49 -> 46 -> 42

Memory 

316556 -> 308720 -> 350080 -> 697696


---- 

- YJIT is significantly faster than Ruby 2.7 (more than 10% faster for discourse benches) 
- Memory with YJIT is significantly higher
- Ruby 3.1 recovered some of the perf regressions Ruby 3.0 exhibited 
- Ruby 3.1 has increased memory footprint significantly (even without yjit) 

Ruby 2.7.4

---
categories:
  50: 55
  75: 58
  90: 62
  99: 110
home:
  50: 96
  75: 102
  90: 111
  99: 168
topic:
  50: 46
  75: 47
  90: 52
  99: 76
categories_admin:
  50: 54
  75: 56
  90: 60
  99: 95
home_admin:
  50: 94
  75: 99
  90: 104
  99: 170
topic_admin:
  50: 46
  75: 47
  90: 52
  99: 70
timings:
  load_rails: 2968
ruby-version: 2.7.4-p191
rss_kb: 316556
pss_kb: 307160
architecture: amd64
memorysize: 31.32 GiB
physicalprocessorcount: 1
virtual: kvm
processor0: Intel(R) Core(TM) i9-9900KF CPU @ 3.60GHz
operatingsystem: Ubuntu
kernelversion: 5.10.60

Ruby 3.0.2

---
categories:
  50: 56
  75: 58
  90: 61
  99: 131
home:
  50: 98
  75: 102
  90: 108
  99: 236
topic:
  50: 49
  75: 50
  90: 52
  99: 119
categories_admin:
  50: 56
  75: 58
  90: 61
  99: 180
home_admin:
  50: 97
  75: 101
  90: 105
  99: 226
topic_admin:
  50: 48
  75: 49
  90: 51
  99: 115
timings:
  load_rails: 3093
ruby-version: 3.0.2-p107
rss_kb: 308720
pss_kb: 299215
architecture: amd64
kernelversion: 5.10.60
virtual: kvm
operatingsystem: Ubuntu
processor0: Intel(R) Core(TM) i9-9900KF CPU @ 3.60GHz
physicalprocessorcount: 1
memorysize: 31.32 GiB

Ruby 3.1 alpha

---
categories:
  50: 54
  75: 55
  90: 56
  99: 61
home:
  50: 92
  75: 95
  90: 99
  99: 214
topic:
  50: 46
  75: 47
  90: 49
  99: 120
categories_admin:
  50: 56
  75: 57
  90: 59
  99: 117
home_admin:
  50: 96
  75: 99
  90: 104
  99: 255
topic_admin:
  50: 47
  75: 48
  90: 50
  99: 55
timings:
  load_rails: 2845
ruby-version: 3.1.0-p-1
rss_kb: 350080
pss_kb: 340437
architecture: amd64
kernelversion: 5.10.60
virtual: kvm
operatingsystem: Ubuntu
processor0: Intel(R) Core(TM) i9-9900KF CPU @ 3.60GHz
physicalprocessorcount: 1
memorysize: 31.32 GiB

Ruby 3.1 alpha + YJIT

---
categories:
  50: 50
  75: 52
  90: 55
  99: 148
home:
  50: 82
  75: 85
  90: 89
  99: 251
topic:
  50: 42
  75: 43
  90: 44
  99: 52
categories_admin:
  50: 51
  75: 52
  90: 57
  99: 247
home_admin:
  50: 85
  75: 90
  90: 93
  99: 277
topic_admin:
  50: 43
  75: 44
  90: 49
  99: 187
timings:
  load_rails: 2849
ruby-version: 3.1.0-p-1
rss_kb: 697696
pss_kb: 688072
architecture: amd64
kernelversion: 5.10.60
virtual: kvm
operatingsystem: Ubuntu
processor0: Intel(R) Core(TM) i9-9900KF CPU @ 3.60GHz
physicalprocessorcount: 1
memorysize: 31.32 GiB

To get Discourse working

diff --git a/Gemfile b/Gemfile
index e09839e88a..3b57ac5c49 100644
--- a/Gemfile
+++ b/Gemfile
@@ -92,7 +92,7 @@ gem 'email_reply_trimmer'
 gem 'image_optim'
 gem 'multi_json'
 gem 'mustache'
-gem 'nokogiri'
+gem 'nokogiri' #, path: '../nokogiri'
 gem 'loofah'
 gem 'css_parser', require: false

@@ -123,7 +123,7 @@ gem 'sidekiq'
 gem 'mini_scheduler'

 gem 'execjs', require: false
-gem 'mini_racer'
+gem 'mini_racer', '0.5.0.pre' # path: '../mini_racer'

 gem 'highline', require: false

@@ -135,6 +135,14 @@ gem 'cose', require: false
 gem 'addressable'
 gem 'json_schemer'

+if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.0.0")
+  gem 'net-pop', require: false
+  gem 'net-smtp', require: false
+  gem 'net-imap', require: false
+  # waiting on new version of i18n gem
+  gem 'psych', '3.3.2'
+end
+