- Kubelet: relist pods on-demand for lower latency operations. Guarded by the new beta feature gate "PLEGOnDemandRelist". ([#137362](https://github.com/kubernetes/kubernetes/pull/137362), [@tallclair](https://github.com/tallclair)) [SIG Node]

	blockSize   int
	streamWg    sync.WaitGroup
	reuseBlocks bool
}

// newMetacacheWriter will create a serializer that will write objects in given order to the output.
// Provide a block size that affects latency. If 0 a default of 128KiB will be used.
// Block size can be up to 4MiB.
func newMetacacheWriter(out io.Writer, blockSize int) *metacacheWriter {
	if blockSize < 8<<10 {
		blockSize = 128 << 10
	}
	w := metacacheWriter{

			// but for the golang.org/x repos it seems to be significantly (~2x)
			// faster than copying one file at a time (via filepath.WalkDir),
			// apparently due to high latency in 'adb' commands.
			if err := adb("push", modDir, deviceModDir); err != nil {
				return 0, err
			}
		} else {
			if err := adb("exec-out", "mkdir", "-p", deviceCwd); err != nil {
				return 0, err
			}

# RDMA (SMB Direct) Feature - Detailed Design Document

## 1. Overview

SMB Direct enables high-performance data transfer using Remote Direct Memory Access (RDMA) technology. This provides ultra-low latency and high bandwidth data transfer by bypassing the traditional TCP/IP stack and allowing direct memory-to-memory transfers between client and server.

## 2. Protocol Specification Reference

- **MS-SMBD**: SMB2 Remote Direct Memory Access (RDMA) Transport Protocol

				return
			}
		case "Online":
			z.Online, err = dc.ReadBool()
			if err != nil {
				err = msgp.WrapError(err, "Online")
				return
			}
		case "Latency":
			err = z.Latency.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Latency")
				return
			}
		case "ReplicatedSize":
			z.ReplicatedSize, err = dc.ReadInt64()
			if err != nil {
				err = msgp.WrapError(err, "ReplicatedSize")

  // Timed Get
  // There are a few design constraints to consider
  // * We want to be responsive to small timeouts, unpark() has non trivial latency overheads (I
  //   have observed 12 micros on 64-bit linux systems to wake up a parked thread). So if the
  //   timeout is small we shouldn't park(). This needs to be traded off with the cpu overhead of

				err = msgp.WrapError(err, "ReplicatedCount")
				return
			}
		case "Latency":
			var zb0002 uint32
			zb0002, err = dc.ReadMapHeader()
			if err != nil {
				err = msgp.WrapError(err, "Latency")
				return
			}
			for zb0002 > 0 {
				zb0002--
				field, err = dc.ReadMapKeyPtr()
				if err != nil {
					err = msgp.WrapError(err, "Latency")
					return
				}
				switch msgp.UnsafeString(field) {

- Improved scheduling latency when many gated pods ([#124848](https://github.com/kubernetes/kubernetes/pull/124848), [@gabesaba](https://github.com/gabesaba)) [SIG Scheduling and Testing]

    *  -  the `health` plugin now includes the `lameduck` option by default, which waits for a duration before shutting down.
* Kubeadm now includes CoreDNS version 1.6.5 ([#85108](https://github.com/kubernetes/kubernetes/pull/85108), [@rajansandeep](https://github.com/rajansandeep))
    *  - `kubernetes` plugin adds metrics to measure kubernetes control plane latency.

			runtime.Gosched()
			acc = e.cached.Load()
		}
	}
	atomic.AddInt64(&acc.N, 1)
	atomic.AddInt64(&acc.Total, int64(value))
	atomic.AddInt64(&acc.Size, sz)
}

// total returns the total call count and latency for the last minute.
func (e *lockedLastMinuteLatency) total() AccElem {
	e.mu.Lock()
	defer e.mu.Unlock()
	return e.getTotal()
}