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Backpressure-driven Fairness

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Co-Authored-By: brekotis <93345790+brekotis@users.noreply.github.com>
This commit is contained in:
Alexey
2026-04-17 10:33:37 +03:00
parent d100941426
commit 5c99cd8eb7
12 changed files with 1521 additions and 32 deletions
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137
src/metrics.rs
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@@ -1310,6 +1310,143 @@ async fn render_metrics(
0
}
);
let _ = writeln!(
out,
"# HELP telemt_me_fair_pressure_state Worker-local fairness pressure state"
);
let _ = writeln!(out, "# TYPE telemt_me_fair_pressure_state gauge");
let _ = writeln!(
out,
"telemt_me_fair_pressure_state {}",
if me_allows_normal {
stats.get_me_fair_pressure_state_gauge()
} else {
0
}
);
let _ = writeln!(
out,
"# HELP telemt_me_fair_active_flows Fair-scheduler active flow count"
);
let _ = writeln!(out, "# TYPE telemt_me_fair_active_flows gauge");
let _ = writeln!(
out,
"telemt_me_fair_active_flows {}",
if me_allows_normal {
stats.get_me_fair_active_flows_gauge()
} else {
0
}
);
let _ = writeln!(
out,
"# HELP telemt_me_fair_queued_bytes Fair-scheduler queued bytes"
);
let _ = writeln!(out, "# TYPE telemt_me_fair_queued_bytes gauge");
let _ = writeln!(
out,
"telemt_me_fair_queued_bytes {}",
if me_allows_normal {
stats.get_me_fair_queued_bytes_gauge()
} else {
0
}
);
let _ = writeln!(
out,
"# HELP telemt_me_fair_flow_state_gauge Fair-scheduler flow health classes"
);
let _ = writeln!(out, "# TYPE telemt_me_fair_flow_state_gauge gauge");
let _ = writeln!(
out,
"telemt_me_fair_flow_state_gauge{{class=\"standing\"}} {}",
if me_allows_normal {
stats.get_me_fair_standing_flows_gauge()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_flow_state_gauge{{class=\"backpressured\"}} {}",
if me_allows_normal {
stats.get_me_fair_backpressured_flows_gauge()
} else {
0
}
);
let _ = writeln!(
out,
"# HELP telemt_me_fair_events_total Fair-scheduler event counters"
);
let _ = writeln!(out, "# TYPE telemt_me_fair_events_total counter");
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"scheduler_round\"}} {}",
if me_allows_normal {
stats.get_me_fair_scheduler_rounds_total()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"deficit_grant\"}} {}",
if me_allows_normal {
stats.get_me_fair_deficit_grants_total()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"deficit_skip\"}} {}",
if me_allows_normal {
stats.get_me_fair_deficit_skips_total()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"enqueue_reject\"}} {}",
if me_allows_normal {
stats.get_me_fair_enqueue_rejects_total()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"shed_drop\"}} {}",
if me_allows_normal {
stats.get_me_fair_shed_drops_total()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"penalty\"}} {}",
if me_allows_normal {
stats.get_me_fair_penalties_total()
} else {
0
}
);
let _ = writeln!(
out,
"telemt_me_fair_events_total{{event=\"downstream_stall\"}} {}",
if me_allows_normal {
stats.get_me_fair_downstream_stalls_total()
} else {
0
}
);
let _ = writeln!(
out,