This is what I call the balancing game - use 2 NIO threads

CraftBukkit-Patches/0025-Netty.patch

@@ -1,4 +1,4 @@
-From 3e4a0e2c62d94464f212de966089589d34eb6f2f Mon Sep 17 00:00:00 2001
+From ec5dafb9483f9548b702c382eebf8c2051663531 Mon Sep 17 00:00:00 2001
 From: md_5 <md_5@live.com.au>
 Date: Thu, 14 Feb 2013 17:32:20 +1100
 Subject: [PATCH] Netty
@@ -487,7 +487,7 @@ index 0000000..0edb062
 +}
 diff --git a/src/main/java/org/spigotmc/netty/NettyServerConnection.java b/src/main/java/org/spigotmc/netty/NettyServerConnection.java
 new file mode 100644
-index 0000000..459919a
+index 0000000..b6c2db7
 --- /dev/null
 +++ b/src/main/java/org/spigotmc/netty/NettyServerConnection.java
 @@ -0,0 +1,106 @@
@@ -547,7 +547,7 @@ index 0000000..459919a
 +                        .addLast("encoder", new PacketEncoder())
 +                        .addLast("manager", new NettyNetworkManager());
 +            }
-+        }).group(new NioEventLoopGroup(1, new ThreadFactoryBuilder().setNameFormat("Netty IO Thread - %1$d").build())).localAddress(host, port).bind();
++        }).group(new NioEventLoopGroup(2, new ThreadFactoryBuilder().setNameFormat("Netty IO Thread - %1$d").build())).localAddress(host, port).bind();
 +    }
 +
 +    /**