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* The createHistogram(options) options weren't actually implemented
* Add a new count property that tracks the number of samples
* Adds BigInt options for relevant properties
* Adds add(other) method for RecordableHistogram
* Cleans up and expands tests
* Eliminates unnecessary ELDHistogram native class
* Improve/Simplify histogram transfer impl
Signed-off-by: James M Snell <jasnell@gmail.com>
perf_hooks: simplify Histogram constructor options
Signed-off-by: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/41153
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/38971
Refs: https://github.com/nodejs/node/issues/35711
Reviewed-By: James M Snell <jasnell@gmail.com>
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Fixes: https://github.com/nodejs/node/issues/38160
PR-URL: https://github.com/nodejs/node/pull/38166
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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* 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>
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Adds a new `perf_hooks.createHistogram()` API for creating histogram
instances that allow user recording.
Makes Histogram instances cloneable via MessagePort. This allows, for
instance, an event loop delay monitor to be running on the main thread
while the histogram data can be monitored actively from a worker thread.
Signed-off-by: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/37155
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
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Signed-off-by: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/32468
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Separating this out from the QUIC PR to allow it to be separately
reviewed. The QUIC implementation makes use of the hdr_histogram
for dynamic performance monitoring. This introduces a BaseObject
class that allows the internal histograms to be accessed on the
JavaScript side and adds a generic Histogram class that will be
used by both QUIC and perf_hooks (for the event loop delay
monitoring).
Signed-off-by: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/31988
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/29547
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
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Due to how the Environment class is used through the codebase,
there are a lot of includes referencing either env.h or env-inl.h.
This can cause that when any development touches those libraries,
a lot of files have to be recompiled.
This commit attempts to change those includes by forward declarations
when possible to mitigate the issue.
Refs: https://github.com/nodejs/node/issues/27531
PR-URL: https://github.com/nodejs/node/pull/30133
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
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This simplifies the implementation of ELDHistogram a bit,
and more generally allows us to have weak JS references
associated with `HandleWrap`s.
PR-URL: https://github.com/nodejs/node/pull/29317
Reviewed-By: James M Snell <jasnell@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/27264
Reviewed-By: Refael Ackermann <refack@gmail.com>
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This patch moves the serialization of coverage profiles into
C++. With this we no longer need to patch `process.reallyExit`
and hook into the exit events, but instead hook into relevant
places in C++ which are safe from user manipulation. This also
makes the code easier to reuse for other types of profiles.
PR-URL: https://github.com/nodejs/node/pull/26874
Reviewed-By: Ben Coe <bencoe@gmail.com>
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Add a sampling-based event loop delay monitor.
```js
const { monitorEventLoopDelay } = require('perf_hooks');
const h = monitorEventLoopDelay();
h.enable();
h.disable();
console.log(h.percentiles);
console.log(h.min);
console.log(h.max);
console.log(h.mean);
console.log(h.stddev);
console.log(h.percentile(50));
```
PR-URL: https://github.com/nodejs/node/pull/25378
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Signed-off-by: gengjiawen <technicalcute@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/25850
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/25734
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gus Caplan <me@gus.host>
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PR-URL: https://github.com/nodejs/node/pull/25507
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@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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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>
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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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Refactor and simplify the perf_hooks native internals.
PR-URL: https://github.com/nodejs/node/pull/17822
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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This commit renames base-object to base_object for consitency with other
c++ source files.
PR-URL: https://github.com/nodejs/node/pull/17022
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
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PR-URL: https://github.com/nodejs/node/pull/16548
Fixes: https://github.com/nodejs/node/issues/16519
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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PR-URL: https://github.com/nodejs/node/pull/15548
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>
Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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PR-URL: https://github.com/nodejs/node/pull/15458
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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PR-URL: https://github.com/nodejs/node/pull/15458
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
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Currently, measuring GC timing using `node_perf` is somewhat broken,
because Isolates and Node Environments do not necessarily match 1:1;
each environment adds its own hook, so possibly the hook code runs
multiple times, but since it can’t reliably compute its corresponding
event loop based on the Isolate, each run targets the same Environment
right now.
This fixes that problem by using new overloads of the GC tracking
APIs that can pass data to the callback through opaque pointers.
PR-URL: https://github.com/nodejs/node/pull/15391
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.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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