memory constrained unicorn workers

config/unicorn.rb.example

@@ -13,11 +13,9 @@
 #
 # ENV['RAILS_RELATIVE_URL_ROOT'] = "/gitlab"
 
-# We recommend using CPU cores + 1 worker processes.
-# Read more about unicorn workers here:
-# http://doc.gitlab.com/ee/install/requirements.html
+# Read about unicorn workers here:
+# http://doc.gitlab.com/ee/install/requirements.html#unicorn-workers
 #
-# The minimum amount of worker processes is 2
 worker_processes 2
 
 # Since Unicorn is never exposed to outside clients, it does not need to

doc/install/requirements.md

@@ -93,9 +93,11 @@ On a very active server (10,000 active users) the Sidekiq process can use 1GB+ o
 It's possible to increase the amount of unicorn workers.
 This will usually help for short waits on databases and caches.
 
-We recommend using CPU cores + 1 unicorn workers.
+For most instances we recommend using CPU cores + 1 unicorn workers.
 For a machine with 2 cores, 3 unicorn workers is ideal.
 
+For memory constrained instances, we recommend using a single unicorn worker.
+
 ## Supported web browsers
 
 - Chrome (Latest stable version)