Tuning Java Garbage Collection

I recently completed a garbage collection exercise on a variety of applications. In all, twenty WebLogic application clusters were tuned. A dozen of these are large busy application clusters. These provide a mix of Web Applications and Web Services. Tuning garbage collection is a matter of trade-offs. Large heaps take longer to garbage collect. Small […]

Command Line Arguments in Python

When I need a new tool, I often code it in Python. Often, command-line options are useful. Sometimes it is possible to have a fixed set of parameters, but this is not very flexible. Fortunately, Python has standard libraries to handle parsing command lines. Three libraries provide varying capabilities. Some of the systems I run on have […]

Choosing Log Levels

There are many tools available that will allow a programmer to create log entries. I originally worked with log4j, but have recently been working with logback. I am also working with Jython and am looking at Python’s logging framework. Used well they can make log analysis simple and provide a rich tool for resolving issues. […]

Code Optimization Rules

It is common for developers to worry about optimization while doing initial programming. Some write extremely complex code in the belief that it is optimized. Unfortunately, this code is often slower than it might otherwise be. Additionally, the compiler may be unable to optimize the code. I find optimization is rarely necessary and effective optimizations […]