Commit Graph

2 Commits

Author SHA1 Message Date
James M Snell
f3eb224c83
perf_hooks: complete overhaul of the implementation
* Update the user timing implementation to conform to
  User Timing Level 3.
* Reimplement user timing and timerify with pure JavaScript
  implementations
* Simplify the C++ implementation for gc and http2 perf
* Runtime deprecate additional perf entry properties
  in favor of the standard detail argument
* Disable the `buffered` option on PerformanceObserver,
  all entries are queued and dispatched on setImmediate.
  Only entries with active observers are buffered.
* This does remove the user timing and timerify
  trace events. Because the trace_events are still
  considered experimental, those can be removed without
  a deprecation cycle. They are removed to improve
  performance and reduce complexity.

Old: `perf_hooks/usertiming.js n=100000: 92,378.01249733355`
New: perf_hooks/usertiming.js n=100000: 270,393.5280638482`

PR-URL: https://github.com/nodejs/node/pull/37136
Refs: https://github.com/nodejs/diagnostics/issues/464
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
2021-02-22 08:46:11 -08:00
himself65
d0a3bf1f11 perf_hooks: allow omitted parameters in 'performance.measure'
Make `startMark` and `endMark` parameters optional.

PR-URL: https://github.com/nodejs/node/pull/32651
Fixes: https://github.com/nodejs/node/issues/32647
Refs: https://www.w3.org/TR/user-timing-2/#measure-method
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2020-04-10 18:08:30 +08:00