IBM User Guide for Java V7 on Windows > Troubleshooting and support > Problem determination > Windows problem determination > Debugging performance problems

JIT compilation and performance

The JIT is another area that can affect the performance of your program. When deciding whether or not to use JIT compilation, you must make a balance between faster execution and increased processor usage during compilation.

The performance of short-running applications can be improved by using the -Xquickstart command-line parameter. The JIT is on by default, but you can use -Xint to turn it off. You also have considerable flexibility in controlling JIT processing. For more details about the JIT, see The JIT compiler and JIT and AOT problem determination.

Parent: Debugging performance problems

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