Card #3413 · Grafana
Browser crashes and heap memory spikes with large dynamic panel repetition
When using repeating panels with many variables, the number of simultaneous queries increases exponentially, overwhelming the browser. This leads to significant heap memory growth (up to 600MB) and causes the dashboard page to freeze or become unresponsive.
Pain score
0.24/ 1.00 · weighted product of four components
Reach1.00distinct authors (log-normalized)
Recency1.00freshness decay, half-life months
Engagement0.92upvotes + comments, normalized
Monetization0.50willingness-to-pay cues in evidence
§ Evidence — 3 verified quotes
Repeating panels multiplies queries exponentially → 10 sensors × 4 panels × 2 queries = 80 simultaneous queries, which overwhelms the browser.
Grafana has no built-in panel limit for repeat variables → it renders everything the variable returns, which is why heap climbs to 500–600MB and the page freezes.
Community experience shows performance degrades significantly beyond 50–100 total rendered panels.
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