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Otherwise this is global state that may be subject to race
conditions e.g. when running `perf_hooks` inside of Worker threads.
Tracking the GC type is removed entirely since the variable was unused.
PR-URL: https://github.com/nodejs/node/pull/25053
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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We generally add these to all headers that are considered
internal to Node.
These aren’t distributed as part of the headers tarball,
so I think this does not have to be semver-major
(and we have been changing the APIs in these headers
freely anyway).
PR-URL: https://github.com/nodejs/node/pull/22514
Reviewed-By: James M Snell <jasnell@gmail.com>
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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>
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Emit the perf_hooks node timing milestones as trace events.
PR-URL: https://github.com/nodejs/node/pull/19175
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Fixes: https://github.com/nodejs/node/issues/17892
Fixes: https://github.com/nodejs/node/issues/17893
Fixes: https://github.com/nodejs/node/issues/18992
PR-URL: https://github.com/nodejs/node/pull/18993
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
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Update performance_state to use AliasedBuffer and update usage sites.
PR-URL: https://github.com/nodejs/node/pull/18300
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
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Collect and report basic timing information about `Http2Session`
and `Http2Stream` instances.
PR-URL: https://github.com/nodejs/node/pull/17906
Refs: https://github.com/nodejs/node/issues/17746
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
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The `double` fields in `performance_state` could previously have
been aligned at 4-byte instead of 8-byte boundaries, which would
have made creating an Float64Array them as a array buffer view
for an ArrayBuffer extending over the entire struct an invalid
operation.
Ref: 67269fd7f33279699b1ae71225f3d738518c844c
Comments out related flaky failure
PR-URL: https://github.com/nodejs/node/pull/14996
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
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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>
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