mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-05-24 08:49:29 +00:00
89222edba9
The request-latency category scores peers by the reciprocal of their RequestLatencyEMA, but that EMA is only updated by NotifyRequestLatency — which only fires when the tx fetcher sends a request to the peer. A peer can serve a burst of fast replies to build a strong EMA, stop announcing transactions so we never request from them again, and retain latency protection indefinitely with a frozen score. Record LastLatencySample (wall-clock time) per peer alongside the EMA update. In the dropper's scoring function, return 0 when the last sample is older than MaxLatencyStaleness (10 minutes). Fresh samples reset the clock, so peers that resume activity become eligible again. Timestamps rather than block counts: real-time is what we actually care about (10 minutes idle), not a block count that varies with chain pace, and the EMA itself is a time.Duration so measuring staleness in the same domain stays consistent. Tests cover the timestamp update on NotifyRequestLatency, the timestamp advancing on successive samples, and the dropper rejecting a stale peer whose EMA and sample count would otherwise qualify. |
||
|---|---|---|
| .. | ||
| catalyst | ||
| downloader | ||
| ethconfig | ||
| fetcher | ||
| filters | ||
| gasestimator | ||
| gasprice | ||
| peerstats | ||
| protocols | ||
| syncer | ||
| tracers | ||
| txtracker | ||
| api_admin.go | ||
| api_backend.go | ||
| api_backend_test.go | ||
| api_debug.go | ||
| api_debug_test.go | ||
| api_miner.go | ||
| backend.go | ||
| dropper.go | ||
| dropper_test.go | ||
| handler.go | ||
| handler_eth.go | ||
| handler_eth_test.go | ||
| handler_snap.go | ||
| handler_test.go | ||
| peer.go | ||
| peerset.go | ||
| state_accessor.go | ||
| sync.go | ||
| sync_test.go | ||