Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions

  




 

 

Thinking in Java
Prev Contents / Index Next

Profiling and optimizing

“We should forget about small efficiencies, say about 97% of the time: Premature optimization is the root of all evil.”—Donald Knuth

Although you should always keep this quote in mind, especially when you discover yourself on the slippery slope of premature optimization, sometimes you do need to determine where your program is spending all its time, to see if you can improve the performance of those sections.

A profiler gathers information that allows you to see which parts of the program consume memory and which methods consume maximum time. Some profilers even allow you to disable the garbage collector to help determine patterns of memory allocation.

A profiler can also be a useful tool in detecting threading deadlock in your program.
Thinking in Java
Prev Contents / Index Next


 
 
   Reproduced courtesy of Bruce Eckel, MindView, Inc. Design by Interspire