# Configuring Collectd

The collectd-configuration.xml file defines the nodes, services and parameters on which collectd collects metrics. It also specifies the list of available collectors.

The file is located in `${OPENNMS_HOME}`. Edit the collectd-configuration.xml file to: In addtion to editing the collectd-configuration.xml, you need to configure collectors for the protocols from which you want to collect data by editing the configuration files associated with them. ## Setting the Thread Pool A globally defined thread attribute limits the number of threads the data collection process uses in parallel. Increase or decrease this value based on your network and the size of your server by changing the value in `${OPENNMS_HOME}/etc/collectd-configuration.xml`:

``````<collectd-configuration