Upgrading the JRE used by ColdFusion

Question

I have a ColdFusion 8.1 application. It gets heavy use and I see jrun.exe getting very high memory usage in the task manager. This is a 32-bit windows 2003 server. When Jrun

Answer 1

Adobe has a Knowledge Base that covers issues like this. Check out http://www.adobe.com/go/2d547983 for instructions.

Sean Corfield has an article that provides some info on using Java 6 with ColdFusion 8 here: http://corfield.org/blog/index.cfm/do/blog.entry/entry/Java_6_and_ColdFusion_8

As long as you install 1.6.0_10 or greater, you should be fine. You might check out ColdFusionBloggers.org from time to time in case other JVM issues come to light in the future.

Answer 2

You didn't specify whether or not you were using the stand-alone server instance or a multi-server configuration. If you're getting a heavy volume of traffic and have a dual core machine with a lot of physical memory, I would consider looking into the multi-server set-up for CF8 and putting together a cluster with load balancing. This will help to distribute your traffic across several instances of CF8 and, assuming you have a beefy server, make better use of the physical resources that you have available.

-Rick

Answer 3

Consider moving Java 7. Java 7 has the G1 Garbage collector which is better at memory deallocation.
If you are having out of memory issues it could be because