mirror of
https://github.com/danog/gojekyll.git
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38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
package commands
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import (
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"fmt"
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"time"
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"github.com/montanaflynn/stats"
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)
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var benchmark = app.Command("benchmark", "Repeat build for ten seconds. Implies --profile.")
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// benchmarkCommand builds the site repeatedly until at least 10 seconds has elapsed,
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// and reports the trial times. Empirically, it the same mean but low variance as using
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// a separate benchmark runner that invokes a new gojekyll process each time.
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func benchmarkCommand() (err error) {
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startTime := time.Now()
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samples := []float64{}
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for i := 0; time.Since(startTime) < 10*time.Second; i++ {
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sampleStart := time.Now()
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site, err := loadSite(*source, options)
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if err != nil {
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return err
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}
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_, err = site.Write()
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if err != nil {
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return err
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}
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dur := time.Since(sampleStart).Seconds()
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samples = append(samples, dur)
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quiet = true
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fmt.Printf("Run #%d; %.1fs elapsed\n", i+1, time.Since(commandStartTime).Seconds())
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}
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median, _ := stats.Median(samples)
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stddev, _ := stats.StandardDeviationSample(samples)
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fmt.Printf("%d samples @ %.2fs ± %.2fs\n", len(samples), median, stddev)
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return nil
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}
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