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From Alex Harui <aha...@adobe.com>
Subject Re: Scout - What does this mean?
Date Mon, 21 Nov 2016 06:19:54 GMT
The two screen grabs seem to be from different samples.  Looks like in the
first one, 13 renderers are created, in the other, 14.
Are all 13 or 14 renderers visible?

Looking at the first screen shot, there is a big drop in the cumulative
time at LayoutManager.doPhasedInstantiation.  That means that the screen
grab does not show the rest of the cumulative time which is probably in
LayoutManager.validateSize and/or LayoutManager.validateProperties.
Knowing what is going on there might help.

There is another drop in DataGroup.getVirtualElementAt so it might be
useful to know what is going on in there.

And it appears that there is a lot of work instantiating the
CurrencyFormatter.  Is there a way to share a single instance and
instantiate that CurrencyFormatter sooner rather than later?

Finally, sometimes when the UI is too slow, you have to resort to trickery
instead of trying to find speed.  Magicians and theater directors are
masters at this.  They use distraction and other techniques to make people
think something interesting is happening while the true work is being
done.  Even putting up a busy cursor can help, but a fancier "animation"
might be more interesting.

For example, if you are sure that the first 3 renderers will be read 90%
of the time, just put up 3 renderers, then add more renderers over time.
You could add 2 per second after the first 3 and folks may not notice.
Similarly, if some "columns" of labels are less important, create them
later as well.  They can pop in a few per frame and it might actually look


On 11/20/16, 8:11 PM, "bilbosax" <waspence41@comcast.net> wrote:

>So I have trimmed all the fat that I can find, and the performance is
>pretty bad IMO.  I cut out all percentage based measurements and all of my
>components now have an absolute layout.  I have removed all of the groups
>humanly possible in all of my components, I have set all of my fxg
>and buttons to cacheasbitmaps.
>The best transition times that I was able to obtain when my button was
>clicked was around 2700ms.  Users will be tapping buttons endlessly
>something is wrong.  So I ran Scout again, and here are two screen grabs
>showing the keyframe where the transition button was clicked, and these
>images are part of the same keyframe showing the elements taking the most
>time right down to the itemrenderer, I just couldn't get them to fit on
>screen at the same time:
>Based on these two images, can you tell if I need to have an actionscript
>itemrenderer rather than an mxml one to increase my performance?
>View this message in context:
>Sent from the Apache Flex Users mailing list archive at Nabble.com.

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