How do I speed up the gwt compiler?

by

Let’s start with the uncomfortable truth: GWT compiler performance is really lousy. You can use some hacks here and there, but you’re not going to get significantly better performance.

A nice performance hack you can do is to compile for only specific browsers, by inserting the following line in your gwt.xml:

<define-property name="user.agent" values="ie6,gecko,gecko1_8"></define-property>

or in gwt 2.x syntax, and for one browser only:

<set-property name="user.agent" value="gecko1_8"/>

This, for example, will compile your application for IE and FF only. If you know you are using only a specific browser for testing, you can use this little hack.

Another option: if you are using several locales, and again using only one for testing, you can comment them all out so that GWT will use the default locale, this shaves off some additional overhead from compile time.

Bottom line: you’re not going to get order-of-magnitude increase in compiler performance, but taking several relaxations, you can shave off a few minutes here and there.

More Related Contents:

  1. Performance of java if-else with return statement [duplicate]
  2. Array or List in Java. Which is faster?
  3. What is the relative performance difference of if/else versus switch statement in Java?
  4. Java 8: performance of Streams vs Collections
  5. Does Java casting introduce overhead? Why?
  6. In java, is it more efficient to use byte or short instead of int and float instead of double?
  7. Faster alternatives to Java’s reflection [closed]
  8. Technique or utility to minimize Java “warm-up” time?
  9. Counting the number of files in a directory using Java
  10. How can I avoid garbage collection delays in Java games? (Best Practices) [closed]
  11. Which part of throwing an Exception is expensive?
  12. Java benchmarking – why is the second loop faster?
  13. Why does Java switch on contiguous ints appear to run faster with added cases?
  14. question on GWT, Cookies and webpage directing
  15. “Servlet” (server-side) initialization code in GWT
  16. Is there a recommended way to use the Observer pattern in MVP using GWT?
  17. Are volatile variable ‘reads’ as fast as normal reads?
  18. Java Streams: How to do an efficient “distinct and sort”?
  19. Support for Compressed Strings being Dropped in HotSpot JVM?
  20. Java toString() using reflection?
  21. How do I add a type to GWT’s Serialization Policy whitelist?
  22. Strange branching performance
  23. Fastest way to strip all non-printable characters from a Java String
  24. Is there a memory-efficient replacement of java.lang.String?
  25. In JNI, how do I cache the class, methodID, and fieldIDs per IBM’s performance recommendations?
  26. Integer.parseInt(scanner.nextLine()) vs scanner.nextInt()
  27. How can I improve performance of Field.set (perhap using MethodHandles)?
  28. Java 2D Drawing Optimal Performance
  29. How to use GWT 2.1 Data Presentation Widgets
  30. How to retrieve a list of directories QUICKLY in Java?

Leave a Comment