General tools
- vmstat
- mpstat
- iostat
- perfbar
Linux
- For Linux 6 (kernels 2.6.31+): Tiptop: http://tiptop.gforge.inria.fr/
Windows
- perfmon
Java
- VisualVM: http://java.sun.com/javase/6/docs/technotes/guides/visualvm/index.html
- jstat: http://java.sun.com/performance/jvmstat/
Memory monitoring:
CPU stats:
Statistics