b.Fatal(err)
	}

	// We collect extra metrics.
	var n, userTime, systemTime int64

	b.ResetTimer()
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			cmd := testenv.Command(b, gotool, "env", "GOARCH")

			if err := cmd.Run(); err != nil {
				b.Fatal(err)
			}
			atomic.AddInt64(&n, 1)
			atomic.AddInt64(&userTime, int64(cmd.ProcessState.UserTime()))

	n := int64(ft.HighDateTime)<<32 + int64(ft.LowDateTime) // in 100-nanosecond intervals
	return time.Duration(n*100) * time.Nanosecond
}

func (p *ProcessState) userTime() time.Duration {
	return ftToDuration(&p.rusage.UserTime)
}

func (p *ProcessState) systemTime() time.Duration {
	return ftToDuration(&p.rusage.KernelTime)

// Sending [Interrupt] on Windows is not implemented.
func (p *Process) Signal(sig Signal) error {
	return p.signal(sig)
}

// UserTime returns the user CPU time of the exited process and its children.
func (p *ProcessState) UserTime() time.Duration {
	return p.userTime()
}

// SystemTime returns the system CPU time of the exited process and its children.
func (p *ProcessState) SystemTime() time.Duration {

	return p.status.ExitStatus() == 0
}

func (p *ProcessState) sys() any {
	return p.status
}

func (p *ProcessState) sysUsage() any {
	return p.status
}

func (p *ProcessState) userTime() time.Duration {
	return time.Duration(p.status.Time[0]) * time.Millisecond
}

func (p *ProcessState) systemTime() time.Duration {
	return time.Duration(p.status.Time[1]) * time.Millisecond
}

		// do not expect them. Fall back to using the PID.
		return newPIDProcess(pid), nil
	}
	// Use the handle.
	return newHandleProcess(pid, h), nil
}

func (p *ProcessState) userTime() time.Duration {
	return time.Duration(p.rusage.Utime.Nano()) * time.Nanosecond
}

func (p *ProcessState) systemTime() time.Duration {
	return time.Duration(p.rusage.Stime.Nano()) * time.Nanosecond

	GCTotalTime     int64

	ScavengeAssistTime int64 // background scavenger
	ScavengeBgTime     int64 // scavenge assists
	ScavengeTotalTime  int64

	IdleTime int64 // Time Ps spent in _Pidle.
	UserTime int64 // Time Ps spent in _Prunning or _Psyscall that's not any of the above.

	TotalTime int64 // GOMAXPROCS * (monotonic wall clock time elapsed)
}

				}

				totalTime := userTime + systemTime
				t.Logf("compare %s user + %s system = %s vs %s", userTime, systemTime, totalTime, value)
				if err := compare(totalTime, value, maxDiff); err != nil {
					t.Logf("compare got %v want nil", err)
					ok = false
				}

				return ok
			}

			testCPUProfile(t, acceptProfile, func(dur time.Duration) {
				userTime, systemTime = diffCPUTime(t, func() {

}

func GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime, kernelTime *Filetime, userTime *Filetime) (err error) {
	r1, _, e1 := Syscall6(procGetProcessTimes.Addr(), 5, uintptr(handle), uintptr(unsafe.Pointer(creationTime)), uintptr(unsafe.Pointer(exitTime)), uintptr(unsafe.Pointer(kernelTime)), uintptr(unsafe.Pointer(userTime)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

		},
		"/cpu/classes/user:cpu-seconds": {
			deps: makeStatDepSet(cpuStatsDep),
			compute: func(in *statAggregate, out *metricValue) {
				out.kind = metricKindFloat64
				out.scalar = float64bits(nsToSec(in.cpuStats.UserTime))
			},
		},
		"/gc/cycles/automatic:gc-cycles": {
			deps: makeStatDepSet(sysStatsDep),
			compute: func(in *statAggregate, out *metricValue) {
				out.kind = metricKindUint64

	err = cmd.Run()
	if a != nil && a.json != nil {
		aj := a.json
		aj.Cmd = append(aj.Cmd, joinUnambiguously(cmdline))
		aj.CmdReal += time.Since(start)
		if ps := cmd.ProcessState; ps != nil {
			aj.CmdUser += ps.UserTime()
			aj.CmdSys += ps.SystemTime()
		}
	}

	// err can be something like 'exit status 1'.
	// Add information about what program was running.
	// Note that if buf.Bytes() is non-empty, the caller usually