Archives pour: Avril 2007, 30
30.04.07
Amdahl's law
Amdahl's law, named after computer architect Gene Amdahl, is used to find the maximum expected improvement to an overall system when only part of the system is improved. It is often used in parallel computing to predict the theoretical maximum speedup using multiple processors.
The generalized Amdahl's law is:
Vincent Partington: Top 10 Java EE performance problems
For the last two and a half months, Vincent Partington has been blogging about the top ten Enterprise Java Application Performance Problems. The list:
- #10 - Excessive logging
- #9 - Incorrect application server configuration
- #8 - Incorrect usage of Java EE
- #7 - Unnecessary use of XML
- #6 - Improper caching
- #5 - Excessive memory usage
- #4 - Badly performing libraries
- #3 - Incorrectly implemented concurrency
- #2 - Unnecessary remoting
- #1 - Incorrect database usage
How to Generate a Thread Dump
Very handy.
