According to @isotopp (Kristian Köhntopp ), this is one of the most important talks to watch regarding performance issues: [Wayback/Archive.is] How NOT to Measure Latency
Gil Tene provides an in-depth overview of Latency and Response Time Characterization, including proven methodologies for measuring, reporting, and investigating latencies, and overview of some common pitfalls encountered (far too often) in the field. Tene also covers specific considerations in garbage collected environments (such as Java).
It is on YouTube (embedded below the signature) as well, but the above link as synchronised slides plus video.
More places where you can get it:
Via [Archive.is] Kristian Köhntopp on Twitter: “… Dieser Talk ist einer der wichtigsten Talks überhaupt, wenn es um das debuggen von “Performance Problemen” oder SLOs geht.”
–jeroen