From: Tony Arcieri <tony.arcieri@...>
Date: 2013-01-15T08:37:42+09:00
Subject: Re: Garbage Collection and Fibers

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On Mon, Jan 14, 2013 at 5:54 AM, Na Na <lists@ruby-forum.com> wrote:

> I did test JRuby out though.  I'm using a perlin noise gem that's been
> built as a c extension, and it's quite fast.  Unfortunately it didn't
> work with jruby, and a jruby compatible gem was significantly slower.


Just curious, what gem were you using for this? There are a number of
things that can affect the performance of JRuby gems (e.g. binding to
poor-quality Java code, using JI instead of writing a Java extension)

It looks like you probably want a gem that wraps this:

http://code.j3d.org/javadoc/org/j3d/texture/procedural/PerlinNoiseGenerator.html

I think you will have a lot easier time finding a fast way to generate
Perlin noise on JRuby than you will finding better garbage collection
solutions on MRI

-- 
Tony Arcieri

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<div dir=3D"ltr">On Mon, Jan 14, 2013 at 5:54 AM, Na Na <span dir=3D"ltr">&=
lt;<a href=3D"mailto:lists@ruby-forum.com" target=3D"_blank" onclick=3D"win=
dow.open(&#39;https://mail.google.com/mail/?view=3Dcm&amp;tf=3D1&amp;to=3Dl=
ists@ruby-forum.com&amp;cc=3D&amp;bcc=3D&amp;su=3D&amp;body=3D&#39;,&#39;_b=
lank&#39;);return false;">lists@ruby-forum.com</a>&gt;</span> wrote:<br>

<div class=3D"gmail_extra"><div class=3D"gmail_quote"><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border=
-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">I di=
d test JRuby out though. =A0I&#39;m using a perlin noise gem that&#39;s bee=
n<br>


built as a c extension, and it&#39;s quite fast. =A0Unfortunately it didn&#=
39;t<br>
work with jruby, and a jruby compatible gem was significantly slower.</bloc=
kquote><div><br></div><div style>Just curious, what gem were you using for =
this? There are a number of things that can affect the performance of JRuby=
 gems (e.g. binding to poor-quality Java code, using JI instead of writing =
a Java extension)</div>

<div><br></div><div style>It looks like you probably want a gem that wraps =
this:</div><div style><br></div><div style><a href=3D"http://code.j3d.org/j=
avadoc/org/j3d/texture/procedural/PerlinNoiseGenerator.html">http://code.j3=
d.org/javadoc/org/j3d/texture/procedural/PerlinNoiseGenerator.html</a><br>

</div><div style><br></div><div style>I think you will have a lot easier ti=
me finding a fast way to generate Perlin noise on JRuby than you will findi=
ng better garbage collection solutions on MRI</div><div><br></div></div>

-- <br>Tony Arcieri<br>
</div></div>

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