FAQ-0549 I have a very large application which takes over 20 seconds to load. What can I do to improve the situation?


FAQ-0549 I have a very large application which takes over 20 seconds to load. What can I do to improve the situation?

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Classification:	Java	Category:	Deployment
Created:	01/03/2001	Modified:	06/25/2001
Number:	FAQ-0549
Platform:	Not Applicable

Question:
I have a very large application which takes over 20 seconds to load. What can I do to improve the situation?

Answer:
Three things in order of importance:

Specify an explicit classpath (removing all default options) using the -classpath interpreter option rather than -cp.

This means the filing system isn't scanned every time the class loader looks for a class from classes.zip.

Increase the initial heap size to circa 2 MB using the -ms interpreter option e.g. -ms 2m

This avoids frequent new allocations being needed.

Use a splash screen so that the user knows something is happening.