Add a samplePerIteration option to monitorEventLoopDelay that records
event loop delay from libuv event loop iterations instead of the timer
interval sampler. The default remains interval-based; existing uses of
monitorEventLoopDelay() keep behaving the same unless the
samplePerIteration option is passed through.
Signed-off-by: Pablo Erhard <pablo.erhardhernandez@datadoghq.com>
PR-URL: https://github.com/nodejs/node/pull/62935
Reviewed-By: Bryan English <bryan@bryanenglish.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
* 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>
* 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>
Pablo Erhard