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perf: fix dashboard out of memory crashing from massive historical metrics payloads

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This commit is contained in:
SaelixCode
2026-03-19 19:59:40 -04:00
parent eb58f302a1
commit 4e9777d47f
3 changed files with 37 additions and 10 deletions
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frontend/src/components/HomeDashboard.tsx
+22 -9
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@@ -82,20 +82,15 @@ export default function HomeDashboard() {
return () => clearInterval(interval);
}, [activeNode?.id]); // eslint-disable-line react-hooks/exhaustive-deps
// Fetch system stats and historical metrics - re-runs when active node changes
// Fetch system stats (CPU/RAM/Disk/Network) - 5s polling, re-runs on node switch
useEffect(() => {
setSystemStats(null);
setMetrics([]);
const fetchSystemStats = async () => {
try {
const [sysRes, metricsRes] = await Promise.all([
apiFetch('/system/stats'),
apiFetch('/metrics/historical')
]);
if (sysRes.ok) setSystemStats(await sysRes.json());
if (metricsRes.ok) setMetrics(await metricsRes.json());
const res = await apiFetch('/system/stats');
if (res.ok) setSystemStats(await res.json());
} catch (error) {
console.error('Failed to fetch system stats or metrics:', error);
console.error('Failed to fetch system stats:', error);
}
};
fetchSystemStats();
@@ -103,6 +98,24 @@ export default function HomeDashboard() {
return () => clearInterval(interval);
}, [activeNode?.id]); // eslint-disable-line react-hooks/exhaustive-deps
// Fetch historical metrics - intentionally slow 60s poll to prevent OOM.
// The backend now returns 1-minute buckets (down from raw 5s points), so
// re-fetching more often than 60s would return the same data anyway.
useEffect(() => {
setMetrics([]);
const fetchMetrics = async () => {
try {
const res = await apiFetch('/metrics/historical');
if (res.ok) setMetrics(await res.json());
} catch (error) {
console.error('Failed to fetch historical metrics:', error);
}
};
fetchMetrics();
const interval = setInterval(fetchMetrics, 60000);
return () => clearInterval(interval);
}, [activeNode?.id]); // eslint-disable-line react-hooks/exhaustive-deps
const chartData = useMemo(() => {
const buckets: Record<string, { time: string; timestamp: number; cpu: number; ram: number }> = {};
const cores = systemStats?.cpu.cores || 1;