Re: Application Startup Performance
- From: "Paul G. Tobey [eMVP]" <p space tobey no spam AT no instrument no spam DOT com>
- Date: Tue, 25 Nov 2008 07:59:18 -0700
You may also be doing a bunch of other data setup during startup. We can't
really tell you what's going on unless you tell us what your code does.
However, if you are, for example, opening a database connection or loading
some bitmaps for use by the program, etc., those would naturally be part of
the problem. None of my programs, other than those that open database
connections, take anything like that long. How long does it take to start
up a simple Hello, World application on the device? That's the best you can
do. If it's 12 seconds, you're stuck, unless you want to switch to native
code. I'd bet that a look through your code will show you tons of things
that are done on startup that could be done in a background thread to
improve user experience.
Paul T.
"Simon" <Simon@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:C453EA6D-E559-48FB-B05A-76250905A30C@xxxxxxxxxxxxxxxx
Hey gang.
First off I want to say thanks for all the efforts on the NETCF. I really
love the library set.
I am a mobile developer who works on 3 major mobile platforms
(WM/BlackBerry/iPhone) and by far .NET is my most experienced platform for
me
however our applications start up time is far longer on NETCF than the
other
2 platforms.
I really want to eliminate the "slow WM" perception and I really think it
relates to our application start up time because I think once the app is
up
and going it flies through some seriously impressive amount of code.
NETCF2
really improved huge performance in this regard.
No other SDK comes even close to NETCFv2+. Seriously the best SDK.
However application start up is taking around 10-14 seconds of the
spinning
cursor until the Main() methods first line occurs in our application.
What kinds of things can I improve on to reduce this?
Perception is reality sadly. The iPhone does not have super fast app
loading
either, but they do some hacky things to improve the "perception". I doubt
I'm able to publically discuss this because of their license agreements
however ;)
I really want to try and improve this experience if possible. I am
thinking
of taking any code out of the Main() and constructor so that a window can
pop
up as fast as possible, and then do loading.
People want to see the "window" pop up ASAP generally, or else they
consider
it slow, even if a wait cursor occurs once the window has shown.
However it takes 10-14 seconds to hit the Main method, so what kinds of
things can cause this?
I imagine straight up amounts of code the JIT has to munch through is one
factor. Is there anything programatically I can do to relieve this?
Are static objects being allocated at this point and increasing the
loading
time?
Any help would be greatly appreciated!
Thanks and take care,
Simon
.
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