function load(s)
    collectgarbage()
    local a = gcinfo()
    _G[s] = require(s)
    collectgarbage()
    local b = gcinfo()
    print(s .. ":\t " .. (b-a) .. "k")
end

load("socket")
load("url")
load("ltn12")
load("mime")
load("tp")
load("smtp")
load("http")
load("ftp")