Over the last 6 years Brad Wood has used FusionReactor, JAVA Server Monitor to deep dive into his clients JAVA and ColdFusion application issues and performance bottle necks.

Brad has also been a strong advocate of FusionReactor through social media and forums recommending people to use FusionReactor when they have been experiencing performance issues in their applications. Brad feels that the amount of money you save using FusionReactor is Invaluable and is much less that the hourly rate of a developer. This is even more the case now that there are multiple flavours of subscription and purchase for everybody’s needs. http://www.fusion-reactor.com/pricing/

FusionReactor is now an indispensable tool for brad and his clients when they are trouble shooting and trying to diagnose issues. So much so that he has now automated the deployment of FusionReactor with his applications.

Brads, first go to feature of FusionReactor is to look at the Stack traces and how you can get a stacktrace of the exact thread you want. Furthermore you can get an entire thread dump of the whole server, the history that FusionReactor provides, allows Brad to see everything that was running during the slow transaction allowing Brad to proactively diagnose and ultimately FIX his clients issues.
Brads second go to feature of FusionReactor is the ability to see the memory spaces Inside the JVM. The Memory spaces inside FusionReactor allows Brad to see the size of; Heap, PermGen, Code Cache and also the Garbage collection times.

For Brad one the biggest benefits of FusionReactor aside from being able to fix issues; is the way that FusionReactor not only provides him with Metrics at run time, but it can also email him the metrics for review after the event has occurred – this is via the feature Crash protection which allows Brad to set rules and thresholds on what he wants to be notified on. This feature has been further worked on to now include Production Debugger. Production Debugger now allows Brad to set Breakpoints on trouble spots in his code to just pause a single thread. FusionReactor will then alert Brad that a single thread has been paused. The customer may need to refresh their page but that is it. The application has not crashed and customers can continue to use the application: http://www.fusion-reactor.com/production-debugger

Try FusionReactor Ultimate with a 14 day FREE trial: http://www.fusion-reactor.com/download/
Pricing overview for FusionReactor http://www.fusion-reactor.com/pricing/