Coldspring Performance Tip

[ElKlaaso]

Hi,

I just wanted to share (if you didnt know this already), that JRockit
and its mission control are so useful for optimizing performance.

What i do when a page or something runs slow, is that i start mission
control, start a JRA recording of about 1 minute. And then refresh the
page for that 1 minute. Then in the recording in mission control i go
to Code->Hot Methods.. and i get all the java methods that took the
most time.

Especially useful in this is the coldfusion.runtime.UDFMethod.invoke
in this hot methods list, if i decollapse it i see all the coldfusion
(including recognizable cfc methods) that took the most time
percentage wise.

For example, i see that listGetAt and listAppend are horrible..

Also, when i viewed mark's presentation on coldspring 2, he said that
he wanted to use getComponentMetadata and instanceOf to make it
faster. My experience is, when i tried making reactor faster, that
getMetadata/getComponentMetadata/InstanceOf all result in the same
Java function to be used. All 3 are slow. If they are called a
reasonable amount of times they always end up on top of the hot
methods list.

greets,
klaas