From 2f241feb637bf71fe5077ba183ffabe03c8212f3 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Wed, 28 Oct 2026 03:44:02 +0100
Subject: drop peer.rttMs from /peers API

---
 docs/openapi.yaml           |  3 ---
 src/api/peers.rs            |  8 --------
 src/api/stats/prometheus.rs | 16 ----------------
 3 files changed, 27 deletions(-)

diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index be3005b..d7a3faa 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -1184,9 +1184,6 @@ components:
         neighbour:
           type: boolean
           description: We keep it alive and sync with it on our own; other peers we only answer.
-        rttMs:
-          type: [number, 'null']
-          description: Round-trip time of the path messages to the peer go over (before that is measured, of HELLOs); null without a recent value.
         traffic:
           $ref: '#/components/schemas/Traffic'
         incidents:
diff --git a/src/api/peers.rs b/src/api/peers.rs
index a653f7d..cea3644 100644
--- a/src/api/peers.rs
+++ b/src/api/peers.rs
@@ -69,9 +69,6 @@ pub(crate) struct PeerStatus {
     heads: Option<usize>,
     /// We keep it alive and sync with it on our own; other peers we only answer.
     neighbour: bool,
-    /// Round-trip time in milliseconds of the path messages to it go over (`swarm::rtt`);
-    /// absent without a recent value.
-    rtt_ms: Option<f64>,
     /// Messages and payload bytes exchanged with it, by kind, since we started (or
     /// since it was last listed).
     traffic: PeerTraffic,
@@ -124,10 +121,6 @@ pub(crate) async fn list_peers(
 
     for (peer, peer_state_mutex) in snapshot {
         let neighbour = crate::swarm::topology::is_neighbour(&state, &peer);
-        let rtt_ms = state
-            .lock_rtt()
-            .effective(&peer, now, state.timing.rtt_fresh_for())
-            .map(|rtt| rtt.as_secs_f64() * 1000.0);
         let traffic = state.traffic.peer(&peer).unwrap_or_default();
         let sync_throughput = state
             .throughput
@@ -169,7 +162,6 @@ pub(crate) async fn list_peers(
                 same_epoch: ps.epoch.map(|epoch| epoch == local_epoch),
                 heads: ps.reported_heads,
                 neighbour,
-                rtt_ms,
                 traffic,
                 incidents: ps.incidents,
                 sync_throughput,
diff --git a/src/api/stats/prometheus.rs b/src/api/stats/prometheus.rs
index 559a23e..8e6fde7 100644
--- a/src/api/stats/prometheus.rs
+++ b/src/api/stats/prometheus.rs
@@ -123,7 +123,6 @@ struct Peer {
     diverged_secs: Option<f64>,
     traffic: PeerTraffic,
     incidents: Incidents,
-    rtt_secs: Option<f64>,
     throughput: Option<f64>,
     destination: Option<Destination>,
 }
@@ -135,10 +134,6 @@ async fn peers(state: &AppState) -> Vec<Peer> {
     let mut peers = Vec::with_capacity(snapshot.len());
     for (key, peer_state) in snapshot {
         let neighbour = crate::swarm::topology::is_neighbour(state, &key);
-        let rtt_secs = state
-            .lock_rtt()
-            .effective(&key, now, state.timing.rtt_fresh_for())
-            .map(|rtt| rtt.as_secs_f64());
         let throughput = state
             .throughput
             .lock_or_recover()
@@ -160,7 +155,6 @@ async fn peers(state: &AppState) -> Vec<Peer> {
                 .map(|t| now.saturating_duration_since(t).as_secs_f64()),
             traffic,
             incidents: peer_state.incidents,
-            rtt_secs,
             throughput,
             alias: aliases.remove(&key),
             destination: state.transport.destination(&key),
@@ -805,16 +799,6 @@ pub(super) async fn render(state: &AppState, stats: &StatsResponse) -> String {
             out.sample("peer_diverged_seconds", &[("peer", &peer.key)], secs);
         }
     }
-    out.family(
-        "peer_rtt_seconds",
-        "gauge",
-        "Round-trip time of the path messages to the peer go over (before that, of HELLOs).",
-    );
-    for peer in &peers {
-        if let Some(rtt) = peer.rtt_secs {
-            out.sample("peer_rtt_seconds", &[("peer", &peer.key)], rtt);
-        }
-    }
     out.family(
         "peer_sync_throughput_bytes_per_second",
         "gauge",
-- 
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