Re: PATCH: 64 bit cleanups for Lua 5.1-work2
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: Re: PATCH: 64 bit cleanups for Lua 5.1-work2
- From: Mike Pall <mikelu-0411@...>
- Date: Fri, 5 Nov 2004 13:06:35 +0100
Hi,
Asko Kauppi wrote:
> Just out of curiosity, did you notice how much bigger the 64bit
> _executable_ was..?
Here are the results for all stripped Linux/ELF binaries (except for hppa
which was done under HP-UX 11i, but the binary format is comparable).
Same options (-O3 and with loadlib), but different compiler versions:
Size Bits Architecture
--------------------------
191192 32 i386
213272 64 x86_64
215868 32 ppc32
264240 64 ppc64
309936 64 alpha
470624 64 ia64
196608 32 hppa
Very interesting. I guess Itanium needs gobs and gobs of instruction fetch
bandwidth. Seeing that memory bandwidth is getting to be the #1 performance
factor for top-of-the-line CPUs nowadays, the x86_64 instruction set is
probably not such a bad choice (they have gotten some other things right,
too).
On a completely unscientific note I have to say that the x86_64 box is
darn fast. Compiling Lua was just a blink of an eye. I want one of these ...
Bye,
Mike