> ## Documentation Index > Fetch the complete documentation index at: https://docs.iroh.computer/llms.txt > Use this file to discover all available pages before exploring further. # Metrics Glossary > Complete reference of all available metrics in Iroh Services List of all available metrics. Below is a reference grouping of every metric exposed by the frontend metrics registry, organized by level: ## Project-level metrics These metrics are aggregated at the project level (overall project view / dashboard). | Metric (group.metric) | Short description | Units | | ------------------------ | ------------------------------------------------------------------------------------------- | -----------: | | direct\_data\_rate | Measured traffic that doesn't pass through a relay, as a percentage of total traffic | Percentage | | direct\_connection\_rate | Measured connections that become direct at least once during the lifetime of the connection | Percentage | | blobs.egress | Blobs egress | Bytes | | blobs.ingress | Blobs ingress | Bytes | | connections.active | Active connections through relay servers | Count | | latency.p50 | 50th percentile latency between endpoints | Milliseconds | | latency.p90 | 90th percentile latency between endpoints | Milliseconds | | latency.p99 | 99th percentile latency between endpoints | Milliseconds | ## Relay-level metrics Metrics in this section relate to relays and relay servers (visibility about relay processes/servers). | Metric (group.metric) | Short description | Units | | ------------------------------- | ---------------------------------------------- | ----: | | relay.bytes\_recv | Total bytes received (relay side) | Bytes | | relay.bytes\_sent | Total bytes sent (relay side) | Bytes | | relay.conns\_rx\_ratelimited | Connections rate-limited events | Count | | relay.disco\_packets\_dropped | Discovery packets dropped | Count | | relay.disco\_packets\_recv | Discovery packets received | Count | | relay.disco\_packets\_sent | Discovery packets sent | Count | | relay.disconnects | Disconnect events | Count | | relay.frames\_rx\_ratelimited | Frames rate-limited events | Count | | relay.got\_ping | Got ping events | Count | | relay.other\_packets\_dropped | Other packets dropped | Count | | relay.other\_packets\_recv | Other packets received | Count | | relay.other\_packets\_sent | Other packets sent | Count | | relay.relay\_accepts | Relay accepts (new relay connections accepted) | Count | | relay.send\_packets\_dropped | Sent packets dropped | Count | | relay.send\_packets\_recv | Sent packets received | Count | | relay.send\_packets\_sent | Sent packets sent | Count | | relay.sent\_pong | Sent pong events | Count | | relay.unique\_client\_keys | Unique client keys observed | Count | | relay.unknown\_frames | Unknown frame types observed | Count | | relay.websocket\_accepts | WebSocket accepts | Count | | relay.relay\_server.connections | Relay server connections | Count | | relay.relay\_server.egress | Number of bytes relayed (egress) | Bytes | ## Endpoint-level metrics These metrics are collected at the endpoint/node level to give per-endpoint visibility. | Metric (group.metric) | Short description | Units | | ------------------------------------------- | ------------------------------------------------------------------------------------------ | ----: | | connection\_became\_direct | Count of connections that switched from using a relay to a direct connection at least once | Count | | connection\_handshake\_success | Count of successfully established secure connections | Count | | recv\_data\_ipv4 | Measured data received directly by nodes through IPv4 | Bytes | | recv\_data\_ipv6 | Measured data received directly by nodes through IPv6 | Bytes | | recv\_data\_relay | Measured data received by nodes through relay (IPv4 or IPv6) | Bytes | | send\_data | Measured data sent from nodes in the network | Bytes | | send\_ipv4 | Amount of data sent directly via IPv4 | Bytes | | send\_ipv6 | Amount of data sent directly via IPv6 | Bytes | | send\_relay | Amount of data sent through relay (measured by nodes sending data) | Bytes | | send\_data\_network\_down | Data send events when network down | Bytes | | nodes\_contacted\_directly | Number of nodes contacted directly | Count | | nodes\_contacted | Number of nodes contacted (any) | Count | | num\_direct\_conns\_added | Number of direct connections added | Count | | num\_direct\_conns\_removed | Number of direct connections removed | Count | | num\_relay\_conns\_added | Number of relay connections added | Count | | num\_relay\_conns\_removed | Number of relay connections removed | Count | | recv\_datagrams | Received datagrams | Count | | recv\_gro\_datagrams | Received GRO datagram counts | Count | | update\_direct\_addrs | Direct address update events | Count | | portmap.external\_address\_updated | External address updated events | Count | | portmap.local\_port\_updates | Local port updates events | Count | | portmap.mapping\_attempts | Mapping attempts (NAT traversal attempts) | Count | | portmap.mapping\_failures | Mapping failures (failed NAT mappings) | Count | | portmap.pcp\_available | PCP (Port Control Protocol) availability events | Count | | portmap.pcp\_probes | PCP probe events | Count | | portmap.probes\_started | Portmap probes started | Count | | portmap.upnp\_available | UPnP availability events | Count | | portmap.upnp\_gateway\_updated | UPnP gateway updated events | Count | | portmap.upnp\_probes\_failed | UPnP probes failed | Count | | portmap.upnp\_probes | UPnP probe events | Count | | netreport.report\_reports\_full | NetReport: reports\_full (report fullness events) | Count | | netreport.report\_reports | NetReport: reports (report events) | Count | | netreport.report\_stun\_packets\_dropped | STUN packets dropped (netreport) | Count | | netreport.report\_stun\_packets\_recv\_ipv4 | STUN packets received (IPv4) | Count | | netreport.report\_stun\_packets\_recv\_ipv6 | STUN packets received (IPv6) | Count | | netreport.report\_stun\_packets\_sent\_ipv4 | STUN packets sent (IPv4) | Count | | netreport.report\_stun\_packets\_sent\_ipv6 | STUN packets sent (IPv6) | Count |