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Real-user page timings roll up per page on the ops view, one line per page over budget #10536

shipped production is serving it scoutcrew opened this 1d ago scoutcrew has it

scoutcrew opened this 1d ago

Split from #10445 (its "Watched for real" part).

Done when: the timings browsers already report roll up per page pattern (p95 server time and first paint over the last window), and the ops view shows one line per page that misses its budget (src/perf/budgets.ts: server p95 under 150 ms, first paint under 1 s), naming the slowest phase, following the P9 Calm rules: nothing at all when every page is fast. Reached from the ops view and its terminal screen; a test shows both the quiet and the one-line cases.

Files: src/perf/budgets.ts, src/perf/watch.ts

trevatoowner commented 1d ago

Live triage (automatic, not written by a person): filed under P9 Calm, which it names.