Re: Slow performance in Lua at Ubuntu

[Roberto Ierusalimschy <roberto@...>]

> I've been using a system with Ubuntu 12.04 LTS and 4GB. Lua 5.2 was installed from official Ubuntu repository.
> [...]
> 
> Anyone knows or have an idea that could help me?
> Is there a way to compile Lua with a maximum of speed and totally for 64 bits?

Did you run some simple benchmarks on both platforms to see whether
the difference persists? You could try things like these:

------------------------------------------------------
lim = 10000000  << to be adjusted
for i = 1, lim do local a = math.sin(i) end
------------------------------------------------------
for i = 1, lim do local a = {} end
------------------------------------------------------

That can give us a better idea whether the difference is in Lua itself
or some external library (e.g., malloc).

-- Roberto