I know Microsoft .NET uses the CLR as a JIT compiler while Java has the Hotspot. What Are the differences between them?

I have a java process currently running under a windows shell. One of the threads responsible for serialisation is blocked indefinitely and as a result important information which is stored in mem...

I have a (java) application that runs in a low latency environment, it typically processes instructions in ~600micros (+/- 100). Naturally as we've moved further into the microsecond space the thin...

The Situation: I'm optimizing a pure-java implementation of the LZF compression algorithm, which involves a lot of byte[] access and basic int mathematics for hashing and comparison. Performance re...

I found the JVM flags here. Is there a more detailed explaination of what exactly they do?

I'd like to have a better understanding of what optimizations HotSpot might generate for my Java code at run time. Is there a way to see the optimized code that HotSpot is using after it's ...

Problem: I have a method that compiles to over 8000 bytes of Java bytecode. HotSpot has a magic limit that makes the JIT not kick in for methods that exceed 8000 bytes. (Yes, it is reasonable to ha...

In benchmarking some Java code on a Solaris SPARC box, I noticed that the first time I call the benchmarked function it runs EXTREMELY slowly (10x difference): First | 1 | 25295.979 ms Second | 1...

Guys when the JVM Crashes it writes an Error Log hs_err_pid.log. I want to find out what caused the JVM to crash ? How to understand these Logs, is it documented anywhere on how this Log is arrange...

I'm trying to diagnose a java.lang.OutOfMemoryError: PermGen Space error when running on Sun's Hotspot JVM, and would like to know how much PermGen space my program is using at various points. Is t...

Im curious what the exact meaning of "committed" memory is when the value is queried from the MemoryUsage class. That class explains it as "committed represents the amount of memory (in bytes) that...