Default streams

The Formant agent ingest several default telemetry streams, containing information about the host, agent, and ROS state (if applicable).

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Device page visualization of several of Formant's default streams

Stream aliasStream nameDescription
CPU$.host.cpuA numeric set stream with CPU utilization percentage and 1 minute load average.
Memory$.host.memoryA numeric set stream with memory utilization percentage and remaining memory available.
Network$.host.networkA numeric set stream with the total host transmit and receive rate, in Mbps.
Disk$.host.diskA numeric set stream with
Location$.host.geoipAn approximate location stream based on a geoIP lookup of the host.
Agent Buffer$.agent.bufferA numeric set stream with the percent utilization of each of the four agent telemetry data buffers.
Health$.agent.healthA health stream indicating that an agent is online.
N/A$.ros.node_onlineA bitset indicating all online ROS nodes. Will only populate if a roscore is running on the host and accessible by the Formant agent.