Uzgodnienie, że Bandwidth- Delay Product (BDP) is essential for optimizing TCP performance in high-speed networks. BDP helps determinate the optimal TCP window size te pełne wykorzystanie dostępne bandwidth with out causing congestion.

Co to jest Bandwidth- Delay Product?

Thee Bandwidth- Delay Product is the product of a network 's bandwidth and it s ronda-trip time (RTT). It presents the maximum compact of data that can be in transit in thee network at any given time.

Kalkulating BDP

Thee formula for BDP is expetforward:

BEL1; BEL1; FLT: 0 BEL3; BDP = Bandwidth × RTT BEL1; FLT: 1 BEL3; BEL3; BEL3;

Kiedy bandwidth is measured in bits per second (bps) and RTT in seconds. Te wyniki is in bits, which can be converted to bytes by by by dividing by 8.

Ampliing BDP to TCP Window Scaling

Nie ma sieci o wysokiej prędkości, że default TCP window size may be independent. TCP window scaling pozwala, że te window size te be ingreeveed thee 65,535- byte limit. To optimize through put, thee window size should be set close to thee BDP.

For example, if thee bandwidth is 10 Gbps andd RTT is 50 ms, the BDP calculation is:

BDP: _ BAR _ 10000,00000 bps × 0,05 s = 500,000,000 bits = 1; _ BAR _ 1; _ BAR _

Dividing by 8 gives approximately 62.5 MB. The TCP window should be scaled according to match this value for optimal performance.

  • Mierzy te network bandwidth in bps.
  • Określ te RTT in seconds.
  • Oblicz BDP using the formula.
  • Adjuss TCP window size with scaling options.