After experimenting with a long running average at maxed out FPS and a variety of map sizes, 128 seems to actually be a good size to use if only drawing bits of world with stuff in it. 64 actually did even better in some situations, but significantly worse in others (lots of land, zoomed out).
{-# LANGUAGE CPP #-}
module Main where
import System.IO
import Control.Concurrent
import Network
import Control.OldException
import Control.Monad
import System.Random
#if !defined(mingw32_HOST_OS)
import System.Posix
#endif
session1 nick room = ["NICK", nick, "", "PROTO", "32", ""]
testing = Control.OldException.handle print $ do
putStrLn "Start"
sock <- connectTo "127.0.0.1" (PortNumber 46631)
num1 <- randomRIO (70000::Int, 70100)
num2 <- randomRIO (0::Int, 2)
num3 <- randomRIO (0::Int, 5)
let nick1 = 'n' : show num1
let room1 = 'r' : show num2
mapM_ (\x -> hPutStrLn sock x >> hFlush sock >> randomRIO (300::Int, 590) >>= threadDelay) $ session1 nick1 room1
mapM_ (\x -> hPutStrLn sock x >> hFlush sock) $ concatMap (\x -> ["CHAT_MSG", show x, ""]) [1..]
hClose sock
putStrLn "Finish"
forks = testing
main = withSocketsDo $ do
#if !defined(mingw32_HOST_OS)
installHandler sigPIPE Ignore Nothing;
#endif
forks