time007/scouter

Scouter is an open source APM and an open source profiler for java application like web applications on a tomcat .

Open Source S/W Application Performance Monitoring

SCOUTER is an open source APM and a database monitoring tool. APM means application performance monitoring or application performance management.

• Monitoring target (currently)

  • Opensource WAS - Tomcat, JBoss, Resin ...
  • Opensource DB - MariaDB(on closed beta testing now)

• Monitoring target (hopeful with every contributor)

  • Nodejs, Redis, MongoDB, PostgreSQL, Apach HTTPD, nginX, php ...

Users request application services on a system. The services use resources on the system. You should understand this context in order to manage the system performance effectively. SCOUTER can help you.

• SCOUTER monitoring :
  • Users : ActiveUser, RecentUser, Today Visitor
  • Services : ActiveService, TPS, ResponseTime, Transaction Profile(class,sql,apicall), TagCount
  • Resources : Cpu,Memory,Network and Heap usage, Connection pools etc.

At a glance(Click to watch the video)

<iframe width="560" height="315" src="https://www.youtube.com/embed/iuArTzsD7Ws" frameborder="0" allowfullscreen></iframe>

Documents

• Document Home
• Quick Start Guide (Quick Installation and Demo)
• Live Demo(Try to use scouter by connecting on live demo system)
• Client Screen Help

Download

• Latest Release

Modules

Scouter has three modules:

• Agent : gather performance information and send to the server

  • Tomcat Agent (Java Agent) : Performance for JVM & Tomcat

    • ASM : using ASM library of OW2 (http://asm.ow2.org/) for BCI(byte code instrumentation)
    • Tools.jar : Java thread dumps, heap dumps, heap histograms, and the other powerful features provided by the JVM as the default.
    • JMX : Some counters for Tomcat & JVM such as GC Count, GC Times etc

  • Linux Agent (Host Agent) : Performance for Linux, Windows and OSX

    • Sigar Lib (https://github.com/hyperic/sigar) : A cross-platform process and system utilities module for Java
    • Counters : Cpu, Memory, Disk, Network

  • MariaDB Agent : [to be announced]

• Server (Collector) : received the data from agent and it stores the data. The data is serviced to clients.
  • Scala : Written in Scala. It will provide a variety of features and performance scalability that can not be written in Java.
  • HASH FILE : Server is using the hash index in order to store large data in files.
  • GZIP : Service performance data and profile data are stored is compressed.

• Client (Viewer) : provide the user interfaces
  • Eclipse RCP : SCOUTER is created as a standalone program. So the client can be connected to multiple servers at the same time. It makes easier that users monitor large scale systems.
  • SWT & GEF4 : Charts and Diagrams

Facebook

• Scouter APM : Facebook Scouter user group

How to contribute

• Notice : Pull request to dev branch only allowed.
• Refer to the development guide below.
  • Scouter developer guide
• Please note that you will have to complete a CLA for your first pull-request.

Q&A

• Google Groups

License

Licensed under the Apache License, Version 2.0