// unmapped summary memory and crashes.

		// Figure out how many chunks are in a physical page, then align BaseChunkIdx
		// to a physical page in the chunk summary array. Here we only assume that
		// each summary array is aligned to some physical page.
		sumsPerPhysPage := ChunkIdx(PhysPageSize / PallocSumBytes)
		baseChunkIdx := BaseChunkIdx &^ (sumsPerPhysPage - 1)

 * connection is typically faster than establishing a new one.
 *
 * When a single logical call requires multiple streams due to redirects or authorization
 * challenges, we prefer to use the same physical connection for all streams in the sequence. There
 * are potential performance and behavior consequences to this preference. To support this feature,

	// reserved for the heap. This includes virtual address space
	// that has been reserved but not yet used, which consumes no
	// physical memory, but tends to be small, as well as virtual
	// address space for which the physical memory has been
	// returned to the OS after it became unused (see HeapReleased
	// for a measure of the latter).
	//
	// HeapSys estimates the largest size the heap has had.

	// Test printing exactly the maximum number of frames to make sure we don't
	// print any "elided" message, eliding exactly 1 so we have to pick back up
	// in the paused physical frame, and eliding 10 so we have to advance the
	// physical frame forward.
	for _, elided := range []int{0, 1, 10} {
		t.Run(fmt.Sprintf("elided=%d", elided), func(t *testing.T) {
			n := elided + runtime.TracebackInnerFrames + runtime.TracebackOuterFrames

type StaticPolicyOptions struct {
	// flag to enable extra allocation restrictions to avoid
	// different containers to possibly end up on the same core.
	// we consider "core" and "physical CPU" synonim here, leaning
	// towards the terminoloy k8s hints. We acknowledge this is confusing.
	//
	// looking at https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/,

	//   traceback may crash (and we want as much output as possible) or the stack
	//   may be changing.
	//
	// - Each physical frame can represent several logical frames, so we might
	//   have to pause in the middle of a physical frame and pick up in the middle
	//   of a physical frame.
	//
	// - The cgo symbolizer can expand a cgo PC to more than one logical frame,

		//    reshaping it to be narrower and longer. As long as the maximum
		//    seats setting will prevent dispatching too many requests at once
		//    to prevent overloading kube-apiserver (and/or etcd or the VM or
		//    a physical machine it is running on), we believe the relaxed
		//    version should be good enough to achieve the P&F goals.
		//
		// TODO: Confirm that the current cap of maximumSeats allow us to
		//   achieve the above.

    }

    private void appendOsStats(final StringBuilder buf) {
        buf.append("\"os\":{");
        final OsProbe osProbe = OsProbe.getInstance();
        buf.append("\"memory\":{");
        buf.append("\"physical\":{");
        append(buf, "free", () -> osProbe.getFreePhysicalMemorySize()).append(',');
        append(buf, "total", () -> osProbe.getTotalPhysicalMemorySize());
        buf.append("},");

	Msglen    uint16
	Version   uint8
	Type      uint8
	Addrs     int32
	Flags     int32
	Index     uint16
	Pad_cgo_0 [2]byte
	Data      IfData
}

type IfData struct {
	Type       uint8
	Physical   uint8
	Addrlen    uint8
	Hdrlen     uint8
	Recvquota  uint8
	Xmitquota  uint8
	Pad_cgo_0  [2]byte
	Mtu        uint64
	Metric     uint64
	Link_state uint64
	Baudrate   uint64
	Ipackets   uint64

        <td>Bytes in idle (unused) spans.</td>
    </tr>

    <tr>
        <td>HeapReleased</td>
        <td id="HeapReleased">{{.HeapReleased}} bytes</td>
        <td>Physical memory returned to the OS.</td>
    </tr>

    <tr>
        <td>HeapObjects</td>
        <td id="HeapObjects">{{.HeapObjects}} objects</td>
        <td>Number of allocated heap objects.</td>
    </tr>