Re: [ANN] LuaJIT-2.0.0-beta1

[Petite Abeille <petite.abeille@...>]

On Oct 31, 2009, at 11:59 PM, Mike Pall wrote:

> Relative speedup over Lua 5.1.4 on standard Lua benchmarks (e.g.  
> 11.9 means it's almost twelve times faster):

Very nice, very nice :)

FWIW, here is what ApacheBench has to say when run against an HTTP  
stack in pure Lua:

% uname -a
Darwin 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT  
2009; root:xnu1228.15.4~1/RELEASE_I386 i386

% ab -n 1000 -k http://127.0.0.1:1080/a


% lua -v Nanoki.lua . 0 1080
Lua 5.1.4  Copyright (C) 1994-2008 Lua.org, PUC-Rio

Requests per second:    773.17 [#/sec] (mean)
Time per request:       1.293 [ms] (mean)


% luajit -v Nanoki.lua . 0 1080
LuaJIT 2.0.0-beta1 -- Copyright (C) 2005-2009 Mike Pall. http://luajit.org/

Requests per second:    1174.19 [#/sec] (mean)
Time per request:       0.852 [ms] (mean)


Quite a palpable speedup out-of-the-box :))

That said, the main speedup seems to come from a much more streamlined  
VM, irrespectively of JIT:

% luajit -v -joff Nanoki.lua . 0 1080
LuaJIT 2.0.0-beta1 -- Copyright (C) 2005-2009 Mike Pall. http://luajit.org/

Requests per second:    1167.37 [#/sec] (mean)
Time per request:       0.857 [ms] (mean)


P.S.

When trying 'luajit -jv' I get an 'unknown luaJIT command'. Did I get  
the command line options wrong?