mirror of
https://github.com/DataDog/go-profiler-notes.git
synced 2026-06-20 16:45:26 +08:00
52 lines
826 B
Go
52 lines
826 B
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"net/http"
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_ "net/http/pprof"
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"os"
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"time"
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"golang.org/x/sync/errgroup"
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)
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func main() {
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if err := run(); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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func run() error {
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g, _ := errgroup.WithContext(context.Background())
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g.Go(func() error {
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addr := "localhost:6060"
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log.Printf("Listening on %s", addr)
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return http.ListenAndServe(addr, nil)
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})
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g.Go(func() error { return computeSum(1000000, 10*time.Millisecond) })
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return g.Wait()
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}
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func computeSum(to int, sleep time.Duration) error {
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for {
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var sum int64
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for i := 0; i < to; i++ {
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sum += int64(i) / 2
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sum += int64(i) / 3
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sum += int64(i) / 4
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sum += int64(i) / 5
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sum += int64(i) / 6
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sum += int64(i) / 7
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sum += int64(i) / 8
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}
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time.Sleep(sleep)
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}
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return nil
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}
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