Troubleshooting Java Performance: Detecting Anti-Patterns with Open Source Tools

© Erik Ostermueller 2017

Erik OstermuellerTroubleshooting Java Performancehttps://doi.org/10.1007/978-1-4842-2979-8_6

6. A Scalability Yardstick

Erik Ostermueller¹ 

(1)

Little Rock, Arkansas, USA

 

Few systems achieve scalability these days, because scalability tests are run so infrequently. This chapter shows how to run a scalability test that is so quick-and-easy, you can run it every day of the week, providing much needed guidance to finally steer your SUT toward scalability.

The objectives of this chapter are:

• Learn a formula to determine exactly how many threads or load to apply so you can easily see how close your system is to scaling.
• Learn how to recognize when test data shows you have reproduced a performance problem that is an impediment to ...