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1. // tests/realdata-018-poll.mjs — tracker#18 real-data check: page latency WHILE the daily run works (hl:web serves one request at
2. // a time; a sync step blocks it). Polls REAL_PATHS in turn every 0.5 s until the server log (REAL_LOG) says "tmdb sync done",
3. // then prints n / median / p95 / p99 / max in ms and the 5 slowest.
4. // REAL_PORT=8750 REAL_LOG=.scratch/w067-delta.log node tests/realdata-018-poll.mjs
5. import { readFileSync } from 'node:fs';
6. const BASE = `http://127.0.0.1:${process.env.REAL_PORT || 8750}`;
7. const LOG = process.env.REAL_LOG;
8. const PATHS = (process.env.REAL_PATHS || '/,/movies,/shows').split(',');
9. const lat = [];
10. let i = 0;
11. while (!readFileSync(LOG, 'utf8').includes('tmdb sync done')) {
12. const p = PATHS[i++ % PATHS.length], t0 = Date.now();
13. try { await (await fetch(BASE + p)).text(); } catch {}
14. lat.push({ p, ms: Date.now() - t0, at: new Date(t0).toISOString().slice(11, 19) });
15. await new Promise(r => setTimeout(r, 500));
16. }
17. const s = lat.map(l => l.ms).sort((a, b) => a - b), q = (f) => s[Math.min(s.length - 1, Math.floor(f * s.length))];
18. console.log(`n=${s.length} median=${q(0.5)} p95=${q(0.95)} p99=${q(0.99)} max=${s[s.length - 1]} ms`);
19. console.log('slowest:', JSON.stringify([...lat].sort((a, b) => b.ms - a.ms).slice(0, 5)));