68 lines
1.5 KiB
TypeScript
68 lines
1.5 KiB
TypeScript
// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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/* eslint-disable no-await-in-loop, no-console */
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import createDebug from 'debug';
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export const debug = createDebug('mock:benchmarks');
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export { Bootstrap } from '../bootstrap';
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export { App } from '../playwright';
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export type StatsType = {
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mean: number;
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stddev: number;
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[key: string]: number;
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};
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export const RUN_COUNT = process.env.RUN_COUNT
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? parseInt(process.env.RUN_COUNT, 10)
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: 100;
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export const GROUP_SIZE = process.env.GROUP_SIZE
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? parseInt(process.env.GROUP_SIZE, 10)
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: 8;
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export const DISCARD_COUNT = process.env.DISCARD_COUNT
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? parseInt(process.env.DISCARD_COUNT, 10)
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: 5;
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export function stats(
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list: ReadonlyArray<number>,
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percentiles: ReadonlyArray<number> = []
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): StatsType {
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if (list.length === 0) {
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throw new Error('Empty list given to stats');
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}
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let mean = 0;
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let stddev = 0;
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for (const value of list) {
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mean += value;
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stddev += value ** 2;
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}
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mean /= list.length;
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stddev /= list.length;
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stddev -= mean ** 2;
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stddev = Math.sqrt(stddev);
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const sorted = list.slice().sort((a, b) => a - b);
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const result: StatsType = { mean, stddev };
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for (const p of percentiles) {
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result[`p${p}`] = sorted[Math.floor((sorted.length * p) / 100)];
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}
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return result;
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}
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// Can happen if electron exits prematurely
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process.on('unhandledRejection', reason => {
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console.error('Unhandled rejection:');
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console.error(reason);
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process.exit(1);
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});
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