Specify that swap will be slow.

doc/install/requirements.md

@@ -64,15 +64,16 @@ You need at least 2GB of addressable memory (RAM + swap) to install and use GitL
 With less memory GitLab will give strange errors during the reconfigure run and 500 errors during usage.
 
 - 512MB RAM + 1.5GB of swap is the absolute minimum but we strongly **advise against** this amount of memory. See the unicorn worker section below for more advise.
-- 1GB RAM + 1GB swap supports up to 100 users
-- **2GB RAM** is the **recommended** memory size and supports up to 500 users
-- 4GB RAM supports up to 2,000 users
-- 8GB RAM supports up to 5,000 users
-- 16GB RAM supports up to 10,000 users
-- 32GB RAM supports up to 20,000 users
-- 64GB RAM supports up to 40,000 users
-
-Notice: The 25 workers of Sidekiq will show up as separate processes in your process overview (such as top or htop) but they share the same RAM allocation since Sidekiq is a multithreaded application.
+- 1GB RAM + 1GB swap supports up to 100 users but it will be slow
+- **2GB RAM** is the **recommended** memory size and supports up to 100 users
+- 4GB RAM supports up to 1,000 users
+- 8GB RAM supports up to 2,000 users
+- 16GB RAM supports up to 4,000 users
+- 32GB RAM supports up to 8,000 users
+- 64GB RAM supports up to 16,000 users
+- 128GB RAM supports up to 32,000 users
+
+Notice: The 25 workers of Sidekiq will show up as separate processes in your process overview (such as top or htop) but they share the same RAM allocation since Sidekiq is a multithreaded application. Please see the section below about Unicorn workers.
 
 ## Unicorn Workers