45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
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const RANGE_MAX = 100;
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const RANGE_MIN = 1;
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const calculatePercentile = (arr, percentile) => {
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const sorted = arr.slice().sort((a, b) => a.responseTime - b.responseTime);
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const index = (percentile / 100) * (sorted.length - 1);
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const lower = Math.floor(index);
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const upper = lower + 1;
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const weight = index % 1;
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if (upper >= sorted.length) return sorted[lower].responseTime;
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return (
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sorted[lower].responseTime * (1 - weight) +
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sorted[upper].responseTime * weight
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);
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};
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export const NormalizeData = (checks) => {
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if (checks.length > 1) {
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// Get the 5th and 95th percentile
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const min = calculatePercentile(checks, 5);
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const max = calculatePercentile(checks, 95);
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const normalizedChecks = checks.map((check) => {
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// Normalize the response time between 1 and 100
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let normalizedResponseTime =
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RANGE_MIN +
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((check.responseTime - min) * (RANGE_MAX - RANGE_MIN)) / (max - min);
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// Put a floor on the response times so we don't have extreme outliers
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// Better visuals
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normalizedResponseTime = Math.max(
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RANGE_MIN,
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Math.min(RANGE_MAX, normalizedResponseTime)
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);
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return {
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...check,
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responseTime: normalizedResponseTime,
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};
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});
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return normalizedChecks;
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} else {
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return checks;
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}
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};
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