Comments on: How much memory does my ColdFusion variable really use? – Part I

By: How much memory does my ColdFusion variable really use? – Part III | Blog in Black

Tue, 09 Mar 2010 20:12:57 +0000

[...] yourself, just grab the CFMemoryCounterAgent.jar and apply it to your CF instance as described in part I. The .zip also contains a memorytest.cfm that should be self-explanatory and will give you an idea [...]

By: How much memory does my ColdFusion variable really use? – Part II | Blog in Black

Tue, 09 Mar 2010 03:54:58 +0000

[...] License « How much memory does my ColdFusion variable really use? – Part I [...]

By: Gabriel

Gabriel — Mon, 08 Mar 2010 19:35:38 +0000

ha!

I won’t spoil it but the readme did make me smile.

- Gabriel

By: Heinz Kabutz

Heinz Kabutz — Sun, 07 Mar 2010 23:48:21 +0000

@Mark: You will still need to define the end-points, I think, otherwise you might pull in the entire CF app every time. BTW, have a look at the README.txt file

By: Dave Quested

Dave Quested — Sun, 07 Mar 2010 22:36:00 +0000

Kai, this is great stuff, thanks for sharing. Looking forward to seeing how you progress with this.

By: Mark Mandel

Mark Mandel — Sun, 07 Mar 2010 21:29:22 +0000

If you are looking for an established project for calculating size of objects in Java, you can try the sizeOf() project – http://sizeof.sourceforge.net/

By: Hendrik Kramer

Hendrik Kramer — Sun, 07 Mar 2010 18:43:54 +0000

@Kai: No, there’s no similar instrumentation setup in the Java Args. Maybe somewhere deeper in the configuration setup. And it’s independent from the underlying app server used, so it must be implemented fully between Railo and the JVM.

By: kai

kai — Sun, 07 Mar 2010 17:46:51 +0000

@Hendrik: Ah, interesting. Haven’t tried it with Railo, but it looks a bit as if they’re making use of a similar approach then. Is there an instrumentation agent setup in the JVM args for Railo?

By: kai

kai — Sun, 07 Mar 2010 17:45:21 +0000

@Heinz: yes, that’s exactly what I had to do. In some instances the CF variables are tied into CF framework code and a reasonable easy variable would end up being 15 MB or so. And you’re right, it will be shown in the next post

By: Hendrik Kramer

Hendrik Kramer — Sun, 07 Mar 2010 15:25:20 +0000

Railo hat eine Build-in Funktion zum Auslesen des Speicherverbrauchs von Scopes und Strukturen. Siehe z.B. hier: http://groups.google.com/group/railo/browse_thread/thread/a8900e347641e5fb/fc2f853062c89e26?lnk=raot. Ist leider noch nicht so gut dokumentiert.

By: Heinz Kabutz

Heinz Kabutz — Sun, 07 Mar 2010 12:52:15 +0000

Hi there, the memory counter code usually needs a bit of tweaking to work properly on your system. You should define end-points to stop the traversal of the tree pulling in whole large chunks of CF code. I would probably do that by ignoring packages that start with the framework packages.

You’ll probably write about that in your next articles though

Heinz