A talk I gave on "Performance Testing and Diagnostics using JMeter, VisualVM and Eclipse Memory Analyser Tool" at Cov Testers at the Ramada Hotel, Solihull, on Wednesday 22nd June 2016. This is an evolution of a shorter talk that I previously gave at the West Midlands Java User Group (WM-JUG) back in 2015, and at Connect Group earlier this year - but now featuring new examples of how the tools covered can be used to track down the sort of bugs that you might expect to find in a typical web application.