5 Side notes JAX London 2016

Quick notes from session 5 of JAX London 2016. Java Flight Recorder preseneted by Ola Westin from Oracle.

Dec 23, 2016· Q.Assistance · 1 minutes· Sep 19, 2024

Overview

InfoQ article about this session.
Java flight recorder: Java Flight Recorder (JFR) is a tool for collecting diagnostic and profiling data about a running Java application.
Java mission control: Oracle® Java Mission Control for Eclipse is a set of plug-ins for the Eclipse IDE designed to help develop, profile and diagnose applications running on the Oracle® Java HotSpot VM.
Key concepts:
- Configure durable events with thresholds levels to discard events within boundaries.
- Not tracking native calls yet.
- Configure continuous recording of the JVM with dump results on exit or on demand.
- Configure time-boxed recordings at a set time.
- With the tool Jcmd we can send commands to the JVM in order to control Java Flight Recordings, troubleshoot, and diagnose JVM and Java Applications.
- Using JMX it is possible to trigger recording sessions when thresholds are breached.
- Those tools can operate remotely from the JVM under test.

That was all for this session.

Many thanks for reading, please leave a comment if you have any quality hint.

Keep on testing, better!

2 Side notes JAX London 2016

Quick notes from session 2 of JAX London 2016, Java for Cloud Natives preseneted by James Governor from RedMonk.
Mismanaged QA roles

Good testers are those who become great experts of the actual behaviour of the solution under test.
Devs environment disorder?

Do developers prefer to work in chaotic environments? Let's face it, we need someone to blame when things do not work as expected.