Hi all -
I'm hoping to get some pointers on how I can track down the cause
of gui slowness in IE9 RC. Some quick background: The app is fairly JS-
heavy... lot's of ajax and fancy gui interactions... i'm using jquery
(1.4.4 at the moment), knockout, and require js. The app runs fine in
IE8 (fast even!) and the latest (+/- a point or two ;-) versions of
the "good" desktop browsers. The obvious symptoms are: Typing in form
inputs is laggy, changing tabs (in the browser itself) is slow /
unresponsive, resizing page elements is laggy, my central timer seems
to slowdown then speedup (like ticks are being queued / deferred),
etc.
I've tried running IE9's profiler - via their developer tools (F12,
etc) - but nothing obvious jumps out (other than... man... there are a
lot of anon funcs to comb through).
Anyway, I'd love it if the group could chime in with tips on how to go
about diagnosing this sort of thing. I'm not looking for people to
debug my code (tho perhaps that time will come ;-). Rather, I'm
looking for some guidance on what profiler is trying to tell me, how I
might instrument my code for easier debugging, other tools that I
could try, and generally what tactics seem most effective for you.
Thanks in advance - been lurking on this list for a while now and I
learn something new every day!
-matt
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