How do I speed up the gwt compiler?
⚡TLDR
Boost your GWT compile speeds with these methods:
-incremental: Only re-compile changed code.- Limit permutations: Set
-locale,-userAgent, and-styleto reduce compilation. - Code splitting: Implement
GWT.runAsyncto load parts of code as needed. -localWorkers: Match the count to your CPU cores to parallelize tasks.- More JVM memory: Use
-Xmxto set the max heap size to avoid memory throttling.
Example configurations:
Measure and adjust to achieve faster GWT compilation.
Narrow compilation scope in GWT
Adjusting your gwt.xml file can focus your compilation scope:
- Browsers: Specific
user.agenttargets only specific browsers. - Locales: Commenting out unused
<!- <extend-property name="locale" values="..."/> ->locales speeds up the process. - Optimizations: The
<collapse-all-properties/>tag reduces permutations during development.
Beware: These modifications can affect i18n and cross-browser support.
Boost compiler resources
Allocating more resources to the GWT compiler can improve speed:
- Heap space: Boost with
-Xmx. - Stack size: Optimize with
-Xss. - Memory management: Tune garbage collection settings for better performance.
However, resources aren't endless. Optimize your algorithms and architecture for lasting gains.
Draft compilation mode
For rapid development cycles, try -draftCompile. It skips many optimizations and gives you a faster build time.
Beware: don't use draft-compiled code in production. It's heavier and slower.
Adapt to GWT updates and engage the community
- GWT versions: Newer releases bring performance enhancements and new features. Out-of-process hosted mode can provide performance gains.
- Community insights: Exchange ideas with the GWT community. You'll be amazed by what you can learn!
- Documentation: Regularly updating, the GWT documentation is your treasure map. Don't forget to check it!
- Best practices: Regularly shift. Embrace continuous learning to make wise decisions and avoid new risks.
Maintain a balance
Remember to keep multi-browser testing in your routine:
- Robust apps: A quick build doesn't always mean a robust app. Your app should run flawlessly on all supported browsers.
- Quality assurance: Ensure your changes to increase compiler speed don’t compromise the quality of your application.
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