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Allow calling eventLoopUtilization() directly on a worker thread: const worker = new Worker('./foo.js'); const elu = worker.performance.eventLoopUtilization(); setTimeout(() => { worker.performance.eventLoopUtilization(elu); }, 10); Add a new performance object on the Worker instance that will hopefully one day hold all the other performance metrics, such as nodeTiming. Include benchmarks and tests. PR-URL: #35664 Reviewed-By: Juan José Arboleda <[email protected]> Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Gerhard Stöbich <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Original file line number | Diff line number | Diff line change |
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'use strict'; | ||
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const common = require('../common.js'); | ||
const { Worker, parentPort } = require('worker_threads'); | ||
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if (process.argv[2] === 'idle cats') { | ||
return parentPort.once('message', () => {}); | ||
} | ||
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const bench = common.createBenchmark(main, { | ||
n: [1e6], | ||
method: [ | ||
'ELU_simple', | ||
'ELU_passed', | ||
], | ||
}); | ||
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function main({ method, n }) { | ||
switch (method) { | ||
case 'ELU_simple': | ||
benchELUSimple(n); | ||
break; | ||
case 'ELU_passed': | ||
benchELUPassed(n); | ||
break; | ||
default: | ||
throw new Error(`Unsupported method ${method}`); | ||
} | ||
} | ||
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function benchELUSimple(n) { | ||
const worker = new Worker(__filename, { argv: ['idle cats'] }); | ||
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spinUntilIdle(worker, () => { | ||
bench.start(); | ||
for (let i = 0; i < n; i++) | ||
worker.performance.eventLoopUtilization(); | ||
bench.end(n); | ||
worker.postMessage('bye'); | ||
}); | ||
} | ||
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function benchELUPassed(n) { | ||
const worker = new Worker(__filename, { argv: ['idle cats'] }); | ||
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spinUntilIdle(worker, () => { | ||
let elu = worker.performance.eventLoopUtilization(); | ||
bench.start(); | ||
for (let i = 0; i < n; i++) | ||
elu = worker.performance.eventLoopUtilization(elu); | ||
bench.end(n); | ||
worker.postMessage('bye'); | ||
}); | ||
} | ||
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function spinUntilIdle(w, cb) { | ||
const t = w.performance.eventLoopUtilization(); | ||
if (t.idle + t.active > 0) | ||
return process.nextTick(cb); | ||
setTimeout(() => spinUntilIdle(w, cb), 1); | ||
} |
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