19 lines
919 B
JavaScript
19 lines
919 B
JavaScript
// Cold start — launch → renderer → interactive. Unlike the other scenarios this
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// measures the LAUNCH itself, so it can't run against an already-up instance:
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// the runner spawns a fresh isolated instance per run (requires --spawn) and
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// reads the timings/boot-marks the launcher captures. Registered here so it's a
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// known name with a baseline entry; the actual measurement lives in run.mjs.
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//
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// Metrics (lower is better):
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// spawn_to_cdp_ms process spawn → CDP page target reachable (electron/V8 up)
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// spawn_to_driver_ms process spawn → renderer mounted + perf driver present
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// fcp_ms renderer nav start → first contentful paint
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export default {
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name: 'cold-start',
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tier: 'cold',
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description: 'Launch → first paint → interactive (fresh spawn per run).',
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run() {
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throw new Error('cold-start is measured by the runner via fresh spawns; use `--spawn`.')
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}
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}
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