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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 parallelRequests = parseInt(process.env.PARALLEL, 10) || 100 | ||
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function makeParallelRequests (cb) { | ||
const promises = new Array(parallelRequests) | ||
for (let i = 0; i < parallelRequests; ++i) { | ||
promises[i] = new Promise(cb) | ||
} | ||
return Promise.all(promises) | ||
} | ||
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function printResults (results) { | ||
// Sort results by least performant first, then compare relative performances and also printing padding | ||
let last | ||
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const rows = Object.entries(results) | ||
// If any failed, put on the top of the list, otherwise order by mean, ascending | ||
.sort((a, b) => (!a[1].success ? -1 : b[1].mean - a[1].mean)) | ||
.map(([name, result]) => { | ||
if (!result.success) { | ||
return { | ||
Tests: name, | ||
Samples: result.size, | ||
Result: 'Errored', | ||
Tolerance: 'N/A', | ||
'Difference with Slowest': 'N/A' | ||
} | ||
} | ||
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// Calculate throughput and relative performance | ||
const { size, mean, standardError } = result | ||
const relative = last !== 0 ? (last / mean - 1) * 100 : 0 | ||
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// Save the slowest for relative comparison | ||
if (typeof last === 'undefined') { | ||
last = mean | ||
} | ||
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return { | ||
Tests: name, | ||
Samples: size, | ||
Result: `${((parallelRequests * 1e9) / mean).toFixed(2)} req/sec`, | ||
Tolerance: `± ${((standardError / mean) * 100).toFixed(2)} %`, | ||
'Difference with slowest': | ||
relative > 0 ? `+ ${relative.toFixed(2)} %` : '-' | ||
} | ||
}) | ||
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return console.table(rows) | ||
} | ||
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module.exports = { makeParallelRequests, printResults } |
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