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d52fd73f18
This should smooth CPU and RAM usage spikes related to these periodic tasks, by reducing the probability that multiple concurrent periodic tasks are performed at the same time.
27 lines
535 B
Go
27 lines
535 B
Go
package timeutil
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import (
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"testing"
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"time"
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)
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func TestAddJitterToDuration(t *testing.T) {
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f := func(d time.Duration) {
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t.Helper()
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result := AddJitterToDuration(d)
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if result < d {
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t.Fatalf("unexpected negative jitter")
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}
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variance := (float64(result) - float64(d)) / float64(d)
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if variance > 0.1 {
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t.Fatalf("too big variance=%.2f for result=%s, d=%s; mustn't exceed 0.1", variance, result, d)
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}
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}
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f(time.Nanosecond)
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f(time.Microsecond)
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f(time.Millisecond)
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f(time.Second)
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f(time.Hour)
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f(24 * time.Hour)
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}
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