jit « performance « Java Testing Q&A

1. Does .NET JIT optimize empty loops away?    stackoverflow.com

This article suggests otherwise. But there is still a need to evaluate the loop condition. Does java just employ a specific trick to recognize this case?

2. Warming up high throughput Java apps    stackoverflow.com

I recently learned about scenarios which require warming up an app (with high throughput requirement) before they start serving real requests. The logic behind this was to allow JIT to do ...

3. Iteration speed of int vs long    stackoverflow.com

I have the following two programs:

long startTime = System.currentTimeMillis();
for (int i = 0; i < N; i++);
long endTime = System.currentTimeMillis();
System.out.println("Elapsed time: " + (endTime - startTime) + " msecs");

long startTime = ...

4. What is microbenchmarking?    stackoverflow.com

I've heard this term used, but I'm not entirely sure what it means, so:

• What DOES it mean and what DOESN'T it mean?
• What are some examples of what IS and ISN'T microbenchmarking?
• What ...

5. when is java faster than c++ (or when is JIT faster then precompiled)?    stackoverflow.com

Possible Duplicate:
JIT compiler vs offline compilers

6. Java, JIT and Garbage Collector efficiency    stackoverflow.com

I want to know about the efficiency of Java and the advantages and disadvantages of Java Virtual Machine and Android. Efficiency is the low use of memory, low use of the processor ...

7. Java: how much time does an empty loop use?    stackoverflow.com

I am trying to test the speed of autoboxing and unboxing in Java, but when I try to compare it against an empty loop on a primitive, I noticed one curious ...

8. How can I use JIT Compiler to enhance the performance?    coderanch.com