It is now almost a year ago I came up with the name GAPP to promote my method “General Approach Performance Profiling”. The last couple of months I have been very busy to use the method in practice and was able to fine tune the way to gather data and do the analysis quicker and quicker.
The power of the method comes to its full exposure in situations that a lot of servers are involved and the business process are very hard to be traced in any way. The latest customer I helped with the method had a system with a hardware loadbalancer, 8 application servers, 2 database servers running 30 databases each and a NETAPP storage. In this situation I was able to pinpoint that problems in the garbage collection on the application servers was there mean issue and a second important issue was residing on a synchronization process on the NETAPP.
The used data mining made it possible to find relations in the data, which are very hard to be determined without extensive tracing. Also the capabilities of data mining to predict with a model future bottlenecks, make GAPP very powerfull. Although it is probably a pitty to tell, I had still not the time to finish my whitepaper. There is a version, but is still beta and should be more professional and enriched with more information about the practical use of the method. For now I have put it online, but be aware it is very beta.
I hope I will from this moment on, not again let you wait to get some new content on this blog.