ensure statistic collection is on

config/initializers/sidekiq.rb

@@ -6,9 +6,11 @@ end
 
 Sidekiq.configure_server do |config|
   config.redis = Discourse.sidekiq_redis_config
-  # add our pausable middleware
+
   config.server_middleware do |chain|
     chain.add Sidekiq::Pausable
+    # ensure statistic middleware is included in case of a fork
+    chain.add Sidekiq::Statistic::Middleware
   end
 end