/scouter

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

Primary LanguageJavaOtherNOASSERTION

scouter

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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 ...

Screen

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)

Demo gif

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

Documents

Download

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

    • 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

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How to contribute

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

Q&A

License

Licensed under the Apache License, Version 2.0