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3000d77017
Add micro-benchmarks to verify the performance degradation related to the number of active `AsyncLocalStorage`s. With these benchmarks, trying to improve the async context propagation to be an O(1) operation, which is an operation more frequent compared to `asyncLocalStorage.run` and `asyncLocalStorage.getStore`. PR-URL: https://github.com/nodejs/node/pull/46414 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de> Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
'use strict';
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const common = require('../common.js');
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const { AsyncLocalStorage, AsyncResource } = require('async_hooks');
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/**
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* This benchmark verifies the performance of
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* `AsyncLocalStorage.getStore()` on propagation through async
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* resource scopes.
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*
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* - AsyncLocalStorage.run()
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* - AsyncResource.runInAsyncScope
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* - AsyncResource.runInAsyncScope
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* ...
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* - AsyncResource.runInAsyncScope
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* - AsyncLocalStorage.getStore()
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*/
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const bench = common.createBenchmark(main, {
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resourceCount: [10, 100, 1000],
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n: [1e4],
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});
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function runBenchmark(store, n) {
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for (let i = 0; i < n; i++) {
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store.getStore();
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}
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}
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function runInAsyncScopes(resourceCount, cb, i = 0) {
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if (i === resourceCount) {
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cb();
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} else {
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const resource = new AsyncResource('noop');
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resource.runInAsyncScope(() => {
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runInAsyncScopes(resourceCount, cb, i + 1);
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});
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}
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}
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function main({ n, resourceCount }) {
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const store = new AsyncLocalStorage();
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runInAsyncScopes(resourceCount, () => {
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bench.start();
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runBenchmark(store, n);
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bench.end(n);
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});
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}
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