Should I always use -XfragmentMerge 20 ?

[regnoult axel]

Hello,

I did not perfectly understood what XfragmentMerge is doing, but I have seen that it is mostly used with the number 20 or 23...
Should I use an appropriate value (analysing the compile report of my application) or could I simply always use 20 ?

Thanks you,

[Alan Leung]

You should not be using XfragmentMerge.

Instead --XfragmentCount is what you should be looking at.

Depending on the size of your application, my suggestion is you tune your application using this method.

  Let N be the number of GWT.runAsync

   Compile your app with --XfragmentCount X where X is a number between N/2 to N-1

Check the output size and see which one you like. This includes checking for the biggest exclusive JS and your leftover JS

-Alan

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