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|
package main
import (
"fmt"
"runtime"
"sync"
)
func humanizeBytes(bytes uint64) string {
const (
_ = iota
kB uint64 = 1 << (10 * iota)
mB
gB
tB
pB
)
switch {
case bytes < kB:
return fmt.Sprintf("%dB", bytes)
case bytes < mB:
return fmt.Sprintf("%.2fKB", float64(bytes)/float64(kB))
case bytes < gB:
return fmt.Sprintf("%.2fMB", float64(bytes)/float64(mB))
case bytes < tB:
return fmt.Sprintf("%.2fGB", float64(bytes)/float64(gB))
case bytes < pB:
return fmt.Sprintf("%.2fTB", float64(bytes)/float64(tB))
default:
return fmt.Sprintf("%dB", bytes)
}
}
func main() {
i := 0
wg := sync.WaitGroup{}
for {
var m runtime.MemStats
runtime.ReadMemStats(&m)
fmt.Printf("#%d: alloc = %s, routines = %d, gc = %d\n", i, humanizeBytes(m.Alloc), runtime.NumGoroutine(), m.NumGC)
wg.Add(1)
go func() {
wg.Done()
}()
wg.Wait()
i = i + 1
}
}
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