closed

[SeniorPlayer]

lua code:

function Sleep(n)
   os.execute("sleep " .. n)
end
function Test()
    local a = {}
    for i=1, 10000 do
        local b = {}
        for j=1, 10000 do
            b[j] = j
        end
        a[i]= b
    end
    Sleep(5)
    print(#a)
end
Test()
Sleep(2)
collectgarbage("collect")
Sleep(1200)
print("sleep end")

compare memory usage of glua and lua5.1
glua test.lua
glua 0.0 00:21.51 12 0 21 4857M

glua's memory usage is always 4857M

lua5.1 test.lua
lua-5.1 0.0 00:03.53 1 0 10 2504M
lua-5.1 0.0 00:03.70 1 0 10 7408K

lua5.1's memory usage from 2504M down to 7408K

The local variables's memory should released by gc after the function return.