RE: Lua Benchmark
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: RE: Lua Benchmark
- From: Jim Mathies <jim@...>
- Date: 1999年7月20日 15:41:33 -0700
Why is the Java 1.2.1 greatly improved over the 1.1.6 vm?
>From 44.1 to 1.2?
Jim
> -----Original Message-----
> From: Ken Rawlings [mailto:krawling@shooter.bluemarble.net]
> Sent: Tuesday, July 20, 1999 3:00 PM
> To: Multiple recipients of list
> Subject: Re: Lua Benchmark
>
>
>
> Since there seems to be quite a bit of interest in Lua benchmarks,
> here's my results from a multi-language numeric benchmark I ran a
> while back to get a general feel for the speed of several
> languages.
>
> In each case nothing special was done for optimization, either in
> the language or in the compiler settings. Take the benchmark with
> a large grain of salt -- it's by no means comprehensive.
>
> (PII300, NT4.0):
>
> Language Seconds
> ------------------- -------
> C [MSVC 5.0] 1.5
> Java 1.2.1 (Classic) 1.2
> Java 1.1.6 44.1
> Lua 3.1 65.8
> Perl 5.005 202.8
> Python 1.5.2 91.2
> TCL 8.1 205.6
> TCL 8.0.5 392.9
>
> _Ken
>
>
> Here's the Lua code:
> ----
> function pnpoly(npol, xp, yp, x, y)
> local i, j, c
> c = 0
> i = 1
> j = npol
> while i <= npol do
> if (yp[i] <= y and y < yp[j]) or (yp[j] <= y
> and y < yp[i])
> and (x < (xp[j] - xp[i]) * (y -
> yp[i]) / (yp[j] - yp[i])
> + xp[i]) then
> c = not c
> end
> j = i
> i = i + 1
> end
> return c
> end
>
> npol = 20
> count = 0
> xp = { 0.0,1.0,1.0,0.0,0.0,1.0,-.5,-1.0,-1.0,-2.0,
> -2.5,-2.0,-1.5,-.5,1.0,1.0,0.0,-.5,-1.0,-.5 }
> yp = { 0.0,0.0,1.0,1.0,2.0,3.0,2.0,3.0,0.0,-.5,
> -1.0,-1.5,-2.0,-2.0,-1.5,-1.0,-.5,-1.0,-1.0,-.5}
> i = 0
> while i < 50000 do
> if pnpoly(npol,xp,yp,0.5,0.5) then count = count + 1 end
> if pnpoly(npol,xp,yp,0.5,1.5) then count = count + 1 end
> if pnpoly(npol,xp,yp,-.5,1.5) then count = count + 1 end
> if pnpoly(npol,xp,yp,0.75,2.25) then count = count + 1 end
> if pnpoly(npol,xp,yp,0,2.01) then count = count + 1 end
> if pnpoly(npol,xp,yp,-.5,2.5) then count = count + 1 end
> if pnpoly(npol,xp,yp,-1.0,-.5) then count = count + 1 end
> if pnpoly(npol,xp,yp,-1.5,.5) then count = count + 1 end
> if pnpoly(npol,xp,yp,-2.25,-1.0) then count = count + 1 end
> if pnpoly(npol,xp,yp,0.5,-.25) then count = count + 1 end
> if pnpoly(npol,xp,yp,0.5,-1.25) then count = count + 1 end
> if pnpoly(npol,xp,yp,-.5,-2.5) then count = count + 1 end
> i = i + 1
> end
> print("count " .. count)
> ----
>