AltME groups: search

Kaj: could you replace `print` by `putchar` in the Mandelbrot bench, 
so it is equivalent to the C version? (Not sure it would change much 
the timings, but at least, the sources will be equivalent).

`print newline` would then become `putchar lf`

Right, if you bench from the console, currently, you're just measuring 
the speed of the interpreter. When the JIT will be there, loops from 
the console might get JIT-compiled, so it will be even less relevant 
to bench from the console. My plan since the beginning is to add 
a profiler to Red, so you'll be able to make precise comparisons 
whatever way the code is run.

Endo: you should rather bench on one long series rather than 1M times 
on a small one in order to avoid function calls overhead and get 
a more fair comparison. When I try with a 1M size string with random 
a,b,c chars, my parse solution is twice faster than the mezz one 
(Brian's one is crashing so can't test it). I was expecting a greater 
difference though.

Joel Needly  et .al. used to bench mark all sorts of things on the 
mail list a few years back .tthe benchmarks would likely need to 
be redone with current versions of rebol

so I think as inkscape is a very very good SVG  work bench we have 
to support this format instead of the SVG from Sidopodi (deprec and 
not working under win2k) to favorise the usage of rEBOL/View + svg 
scripts capable + inkscape

if you say guys you hav a powerfull Sclar and Vectorial dialect in 
rebol but you have to take you text editor to compose you graphics 
those guys will trash out out the window ... You can expect a guy 
the use all along the day photoshop illustratior, Wave etc to open 
a text editor there is no way !!! Like to expect that a 3D modeler 
will let apart his grpahical environement and use a taxte editor 
to make his 3D scene and animation usin yafray or povRAY... Script 
3D renderer are far away from in realtime 3D workbench (with graphical 
UI) but what want a 3D worker ??? Take 3 weeks to write a scene then 
wait three weeks to have the rendering then make the constatation 
that the result is not exactly what he wants and restart for 2 weeks 
of work and 3 weeks of generation ? Or edit his scene into a graphical 
UI that allow him to moselise and renderise his work in a bench of 
seconds ?

n: 100'000
bench: func [code] [t1: now/precise loop n code
	print [difference now/precise t1 mold code]
]
bench [switch 'f [a [] b [] c [] d [] e [] f [] g [] h []]]

bench [parse [f] ['a () | 'b () | 'c () | 'd () | 'f () | 'g () | 
'h ()]]

Hello, you could find a simple bench study I've made for my job about 
Uniserve vs Apache, on the Rebol Documentation Project (see http://www.rebdocproj.org/article.php3?id_article=181). 
It's in french, but with some charts.  Uniserve is very close to 
Apache 1.3 (and 2.0, not published).

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    <highlight class="double-plays">
      <p>Los Angeles 2; LA Angels 1.</p>
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</sports-content></xts:sports-content-set>

Yes is justed checken my SDK its also not inside the 2.7.. ;-( So 
im on the bench ...

I've been on the bench related to rebcode for a year, and I was its 
most avid tester. Waiting for R3...

I did some bench with Apache 2.0 a few month ago: results were showing 
10% slower than Apache for small files, and 20-30% faster for > 64kb 
files. Theses results are very encouraging given the fact that Apache 
is compiled C while Cheyenne is interpreted REBOL.

This bench looks a little odd to me. First, how can Yaws supports 
80,000 parallel connections when running on a single server (TCP/IP 
stack limit is at 65535 AFAIK) ? Second, the load is generated by 
sending request byte per byte with a delay of 10s between each bytes 
and getting in response a file of 1 byte...This isn't a web server 
real load test, it just compares the scalability of OS threads vs 
"soft threads". You don't need a benchmark to know which one scales 
better on a mono-CPU server, it's obvious. How Erlang handles multi-core 
CPU ?

Cheyenne, with its mono-thread full async engine, would scale very 
well on a similar benchmark, probably much better than Apache, but 
less than Yaws I guess. OTOH, a bench testing raw throughput, would 
show Apache performing quite better than Cheyenne (maybe 2 or 3 times 
better). It's hard for interpreted REBOL to compete with compiled 
C on raw power. I think that it would be possible to reduce this 
difference to 1.5 with deep optimization in Cheyenne (task scheduled 
for v1.1 according to my roadmap). R3 should open new perspectives 
for speed & memory optimizations (threading, clean async kernel, 
optimized ports, Rebcode, plugins...).

Your bench doesn''t take in account the time taken by the GC to recycle 
 the memory.
Some functions polluate the memory some other not.
You should add the time needed to recycle after each test.