Use the 95th percentile for startup capacity

2026-10-08 11:36:57 -04:00
parent 8863e8a882
commit a33b897cd0
3 changed files with 26 additions and 9 deletions
@@ -82,7 +82,7 @@ export function recordInstanceResources(hostId: string, inventory: HostInventory
                WHERE ${scope === '*' ? '' : 'host_id=? AND '}phase=? AND bucket>=? ORDER BY bucket DESC LIMIT ?`)
                .all(...(scope === '*' ? [] : [scope]), phase, new Date(Date.parse(timestamp) - WINDOW_MS).toISOString(), MAX_SAMPLES) as
                { cpu_cores: number; memory_bytes: number; bucket: string }[];
-            const percentile = (values: number[]) => values.sort((a, b) => a - b)[phase === 'startup' ? values.length - 1 : Math.ceil(values.length * 0.95) - 1];
+            const percentile = (values: number[]) => values.sort((a, b) => a - b)[Math.ceil(values.length * 0.95) - 1];
            const cpu = Math.max(percentile(rows.map(row => row.cpu_cores)), peak.cpu);
            const memory = Math.ceil(Math.max(percentile(rows.map(row => row.memory_bytes)), peak.memory));
            handle.prepare(`INSERT INTO ec_resource_allowances