Difference between revisions of "Main Page"

From collectd Wiki
Jump to: navigation, search
(Get involved: +Add example configs.)
(Featured plugin: GenericJMX)
Line 26: Line 26:
 
| <h2>[[File:Icon New.png]]&nbsp;Featured plugin</h2>
 
| <h2>[[File:Icon New.png]]&nbsp;Featured plugin</h2>
 
<div class="box_body">
 
<div class="box_body">
[[File:Plugin-netapp-df complex.png|120px|right]]
+
[[Image:Java memory eden space.png|120px|right]]
The '''{{Plugin|NetApp}}''' connects to a ''NetApp'' storage system and queries various performance values from the system. Queried values include used / free disk space, read and write operations, network IO, and CPU utilization.<br />
+
The '''{{Plugin|GenericJMX}}''' reads ''Managed Beans'' (MBeans) from an ''MBeanServer'' using JMX. The plugin is written in Java and requires the {{Plugin|Java}} to function.<br />
 
<br />
 
<br />
The plugin uses ''libnetapp'', a library provided by ''NetApp, Inc.'', to connect to one or more filers and receive information. This way information is available that isn't provided via [[Plugin:SNMP|SNMP]], for example snapshot statistics. Due to a wide variety of available statistics, it is possible to control very fine-grained which information to collect using the configuration. Each group of statistics can be collected in a separate interval, so that free / used disk space can be collected less often than, say, CPU utilization.<br />
+
The ''Java Management Extensions'' (JMX) is a generic framework to provide and query various management information. The interface is used by the ''Java Virtual Machine'' (JVM) to provide information about the memory used, threads and so on. These basic performance values can therefore be collected for every Java process without any support in the Java process itself.<br />
 
<br />
 
<br />
The plugin was written in 2009 by ''Sven Trenkel'' for the ''noris network AG'' and licensed under the ''MIT license''. ('''[[Plugin:NetApp|more&nbsp;…]]''')
+
Advanced Java processes can use the JMX interface to provide performance information themselves. The ''Apache Tomcat'' application server, for example, provides information on the number of requests processed, the number of bytes sent, processing time, and thread counts.
 +
('''[[Plugin:GenericJMX|more&nbsp;…]]''')
 
</div>
 
</div>
 
|-
 
|-

Revision as of 01:04, 13 March 2010

Welcome to the Wiki of collectd, the system statistics collection daemon.

Icon Txt.png Documentation for users

Icon New.png Featured plugin

Java memory eden space.png

The GenericJMX plugin reads Managed Beans (MBeans) from an MBeanServer using JMX. The plugin is written in Java and requires the Java plugin to function.

The Java Management Extensions (JMX) is a generic framework to provide and query various management information. The interface is used by the Java Virtual Machine (JVM) to provide information about the memory used, threads and so on. These basic performance values can therefore be collected for every Java process without any support in the Java process itself.

Advanced Java processes can use the JMX interface to provide performance information themselves. The Apache Tomcat application server, for example, provides information on the number of requests processed, the number of bytes sent, processing time, and thread counts. (more …)

Icon Users.png Get involved

Icon Development.png Development information

Navigation

Using the “tabs” in the top right corner you can switch between the homepage and the wiki. When in the wiki, the menu on the right holds a link to the “Main Page” (this page) and other wiki controls.

Editing

You can edit pages freely and without creating a user account and logging in.

If you do not log in, your IP-address will be saved and displayed in the change history. If your change adds an external link, you will be asked to solve a Captcha. Automated attacks on our wiki made this unfortunate step necessary, sorry.

If you have questions about anything you read in this wiki, please don't hesitate to ask this question in the discussion page. You can find a link at the top, right next to “page”.