Although using MXML can be quicker
to code up it appears that using it for itemRenderers is a lot more CPU
intensive than coding itemRenderers in AS3. The Repeater component also
seems to hog a lot of memory.
MXML vs AS3 for itemRenderers
this is an ItemRenderer memory profile using MXML
this is the same itemRenderer recoded in AS3
Example of Memory usage for a Repeater component vs AS3 (based on the Paginator Component we built)
Profile of Paginator using a Repeater Component
Profile of Paginator using a good old fasioned for loop:
try and always you an AS3 Class for itemRenderers rather than MXML. I wonder if Gumbo is going to be any better?