NonOverlappingStats: nonOverlappingStats,
				HasRangeTime:        totalRangeTime != 0,
			})
			name = summary.Name
			execTime += summary.ExecTime
			if maxTotalTime < summary.TotalTime {
				maxTotalTime = summary.TotalTime
			}
		}

		// Compute the percent of total execution time these goroutines represent.
		execTimePercent := ""
		if totalExecTime > 0 {

	SchedWaitTime     time.Duration
	BlockTimeByReason map[string]time.Duration
	SyscallTime       time.Duration
	SyscallBlockTime  time.Duration

	// TotalTime is the duration of the goroutine's presence in the trace.
	// Necessarily overlaps with other stats.
	TotalTime time.Duration

	// Total time the goroutine spent in certain ranges; may overlap
	// with other stats.
	RangeTime map[string]time.Duration
}

					UserRegionSummary:   r,
					Goroutine:           g.ID,
					NonOverlappingStats: nonOverlappingStats,
					HasRangeTime:        totalRangeTime != 0,
				})
				if maxTotal < r.TotalTime {
					maxTotal = r.TotalTime
				}
			}
		}

		// Sort.
		sortBy := r.FormValue("sortby")
		if _, ok := validNonOverlappingStats[sortBy]; ok {
			slices.SortFunc(regions, func(a, b region) int {

	}
	if stats.SyscallTime < 0 {
		t.Error("found negative SyscallTime")
	}
	if stats.SyscallBlockTime < 0 {
		t.Error("found negative SyscallBlockTime")
	}
	if stats.TotalTime < 0 {
		t.Error("found negative TotalTime")
	}
	for reason, dt := range stats.BlockTimeByReason {
		if dt < 0 {
			t.Errorf("found negative BlockTimeByReason for %s", reason)
		}
	}
	for name, dt := range stats.RangeTime {

	}
	total := gcTotal + scavTotal + stats.IdleTime + stats.UserTime
	if total != stats.TotalTime {
		t.Errorf("manually computed overall total does not match TotalTime: %d cpu-ns vs. %d cpu-ns", total, stats.TotalTime)
	}
	if total == 0 {
		t.Error("total time is zero")
	}
	if gcTotal == 0 {
		t.Error("GC total time is zero")
	}

				var value time.Duration
				for _, sample := range p.Sample {
					value += time.Duration(sample.Value[1]) * time.Nanosecond
				}

				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
			}

	// Compute overall GC CPU utilization.
	// Omit idle marking time from the overall utilization here since it's "free".
	memstats.gc_cpu_fraction = float64(work.cpuStats.GCTotalTime-work.cpuStats.GCIdleTime) / float64(work.cpuStats.TotalTime)

	// Reset assist time and background time stats.
	//
	// Do this now, instead of at the start of the next GC cycle, because
	// these two may keep accumulating even if the GC is not active.

	safePointFn   func(*p)
	safePointWait int32
	safePointNote note

	profilehz int32 // cpu profiling rate

	procresizetime int64 // nanotime() of last change to gomaxprocs
	totaltime      int64 // ∫gomaxprocs dt up to procresizetime

	// sysmonlock protects sysmon's actions on the runtime.
	//
	// Acquire and hold this mutex to block sysmon from interacting
	// with the rest of the runtime.

		}
	}

	// Capture start-the-world time before doing clean-up tasks.
	if now == 0 {
		now = nanotime()
	}
	totalTime := now - w.startedStopping
	if w.reason.isGC() {
		sched.stwTotalTimeGC.record(totalTime)
	} else {
		sched.stwTotalTimeOther.record(totalTime)
	}
	trace := traceAcquire()
	if trace.ok() {
		trace.STWDone()
		traceRelease(trace)
	}