While `perf_hooks` is still in experimental, remove less useful
bootstrap milestones.
PR-URL: https://github.com/nodejs/node/pull/21247
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Replace `{Array}` with `{type[]}`.
PR-URL: https://github.com/nodejs/node/pull/19895
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Remove the `performance.getEntries()` and `performance.clear*()`
variants and eliminate the accumulation of the global timeline
entries. The design of this particular bit of the API is a memory
leak and performance footgun. The `PerformanceObserver` API is
a better approach to consuming the data in a more transient way.
PR-URL: https://github.com/nodejs/node/pull/19563
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Adds the `node.perf.usertiming` trace events category for recording
usertiming marks and measures (e.g. `perf_hooks.performance.mark()`)
in the trace events timeline.
Adds the `node.perf.function` trace events category for recording
`perf_hooks.performance.timerify()` durations in the trace events
timeline.
PR-URL: https://github.com/nodejs/node/pull/18789
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Add missing clear() method to `perf_hooks.performance` to
remove the entries from the master timeline to prevent
that from being a memory leak.
PR-URL: https://github.com/nodejs/node/pull/18046
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/17937
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Add missing "introduced_in" comments for alternative version links.
PR-URL: https://github.com/nodejs/node/pull/16741
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
PR-URL: https://github.com/nodejs/node/pull/15406
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Remove the executable bits of the file modes of some files that
accidentally received it.
PR-URL: https://github.com/nodejs/node/pull/15132
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
An initial implementation of the Performance Timing API for Node.js.
This is the same Performance Timing API implemented by modern browsers
with a number of Node.js specific properties. The User Timing mark()
and measure() APIs are implemented, garbage collection timing, and
node startup milestone timing.
```js
const { performance } = require('perf_hooks');
performance.mark('A');
setTimeout(() => {
performance.mark('B');
performance.measure('A to B', 'A', 'B');
const entry = performance.getEntriesByName('A to B', 'measure')[0];
console.log(entry.duration);
}, 10000);
```
The implementation is at the native layer and makes use of uv_hrtime().
This should enable *eventual* integration with things like Tracing
and Inspection.
The implementation is extensible and should allow us to add new
performance entry types as we go (e.g. for measuring i/o perf,
etc).
Documentation and a test are provided.
PR-URL: https://github.com/nodejs/node/pull/14680
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
