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Enhance substrate ingest limits and optimize simulator stream reuse

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This commit is contained in:
Valère Plantevin
2026-05-12 11:44:01 -04:00
parent d3f09ee062
commit 5d2552efb5
9 changed files with 81 additions and 52 deletions
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62
substrate/src/world/systems.rs
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@@ -25,6 +25,8 @@ use super::resources::{DiagnosticsState, ExportSampleState, SensorRegistry};
/// T1 batch limit per tick. Anything beyond this stays in the channel and
/// either drains next tick or gets dropped on full (T1's contract is lossy).
const T1_INGEST_BATCH: usize = 1024;
const T2_INGEST_BATCH: usize = 512;
const T3_INGEST_BATCH: usize = 256;
/// Drain the three tier channels into ECS state.
///
@@ -56,10 +58,15 @@ pub(super) fn ingest_system(
// T2 — uni streams.
{
let mut t2 = bridge.t2.lock().unwrap();
while let Ok(msg) = t2.try_recv() {
histogram!("substrate_latency_us", "tier" => "t2")
.record(now.saturating_sub(msg.timestamp_us) as f64);
upsert_reading(&mut registry, &mut commands, &mut q, msg);
for _ in 0..T2_INGEST_BATCH {
match t2.try_recv() {
Ok(msg) => {
histogram!("substrate_latency_us", "tier" => "t2")
.record(now.saturating_sub(msg.timestamp_us) as f64);
upsert_reading(&mut registry, &mut commands, &mut q, msg);
}
Err(_) => break,
}
}
}
@@ -67,27 +74,32 @@ pub(super) fn ingest_system(
// sensor value (NaN if we've never seen this (device, sensor) before).
{
let mut t3 = bridge.t3.lock().unwrap();
while let Ok(inbound) = t3.try_recv() {
histogram!("substrate_latency_us", "tier" => "t3")
.record(now.saturating_sub(inbound.command.timestamp_us) as f64);
let key = (inbound.command.device_id, inbound.command.sensor_id);
let current_value = registry
.map
.get(&key)
.and_then(|&e| q.get(e).ok())
.map(|d| d.raw_value)
.unwrap_or(f64::NAN);
let ack = QuicMessage {
device_id: inbound.command.device_id,
sensor_id: inbound.command.sensor_id,
raw_value: current_value,
timestamp_us: now_us(),
sequence_number: inbound.command.sequence_number,
sensor_type: inbound.command.sensor_type,
};
// Ignore send errors: the demux task may have given up if the
// connection died while we were processing.
let _ = inbound.reply.send(ack);
for _ in 0..T3_INGEST_BATCH {
match t3.try_recv() {
Ok(inbound) => {
histogram!("substrate_latency_us", "tier" => "t3")
.record(now.saturating_sub(inbound.command.timestamp_us) as f64);
let key = (inbound.command.device_id, inbound.command.sensor_id);
let current_value = registry
.map
.get(&key)
.and_then(|&e| q.get(e).ok())
.map(|d| d.raw_value)
.unwrap_or(f64::NAN);
let ack = QuicMessage {
device_id: inbound.command.device_id,
sensor_id: inbound.command.sensor_id,
raw_value: current_value,
timestamp_us: now_us(),
sequence_number: inbound.command.sequence_number,
sensor_type: inbound.command.sensor_type,
};
// Ignore send errors: the demux task may have given up if the
// connection died while we were processing.
let _ = inbound.reply.send(ack);
}
Err(_) => break,
}
}
}
}