The task for my Google Summer of Code program was to improve the performance of the Role Strategy Plugin. The performance issues for Role Strategy Plugin had been reported multiple times on Jenkins JIRA. With a large number of roles and with complex regular expressions, a large slow-down was visible on the Web UI. Even before GSoC started, there were a number of patches which tried to improve performance...

During my Google Summer of Code Project, I have created the brand new Folder Auth Plugin for easily managing permissions to projects organized in folders from the Folders plugin. This new plugin is designed for fast permission checks with easy-to-manage roles. The 1.0 version of the plugin has just been released and can be downloaded from your Jenkins' Update center. This plugin was inspired by the Role Strategy Plugin and brings...

I have been working on improving the performance of the Role Strategy Plugin as a part of my Google Summer of Code project. Since there was no existing way to measure performance and do benchmarks on Jenkins Plugins, my work for the first phase of the project was to create a framework for running benchmarks in Jenkins plugins with a Jenkins instance available. To make our job...

Oleg Nenashev and I will be speaking at DevOps World | Jenkins World in San Francisco this year about Scaling Network Connections from the Jenkins Master. Over the years there have been many efforts to analyze, optimize, and fortify the “Remoting channel” that allows a master to orchestrate agent activity and receive build results. Techniques such as tuning the agent launcher can improve service, but qualitative change can only...

Table of Contents Introducing "Project Cheetah" Yes, but what does it DO? How Do I Set Speed/Durability Settings? 1. Globally, you can choose a global default durability setting: 2. Each Pipeline can get a custom Durability Setting: 3. Multibranch Projects can use a new BranchProperty to customize the Durability Setting. Will Performance-Optimized Mode Help Me? Other Goodies How Did You Do It? What Next? Since it launched, Pipeline has had a bit of a Dr....

This is a guest post by Sam Van Oort, Software Engineer at CloudBees and contributor to the Jenkins project. Today I’m going to show you best practices to write scalable and robust Jenkins Pipelines. This is drawn from a combination of work with the internals of Pipeline and observations with large-scale users. Pipeline code works beautifully for its intended role of automating build/test/deploy/administer tasks. As it is pressed into...

This is a cross post by Sam Van Oort, Software Engineer at CloudBees and contributor to the Jenkins project. Today I’m going to show you how easy it is to tune Jenkins Java settings to make your masters more responsive and stable, especially with large heap sizes. The Magic Settings: Basics: -server -XX:+AlwaysPreTouch GC Logging: -Xloggc:$JENKINS_HOME/gc-%t.log -XX:NumberOfGCLogFiles=5 -XX:+UseGCLogFileRotation -XX:GCLogFileSize=20m -XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCCause -XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy G1 GC settings: -XX:+UseG1GC -XX:+ExplicitGCInvokesConcurrent -XX:+ParallelRefProcEnabled...