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public:congestion_avoidance_on_a_lossy_link [2021/07/12 15:11] – msvoelkerpublic:congestion_avoidance_on_a_lossy_link [2021/07/12 15:15] (current) – msvoelker
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 Thus, after W/2 RTT cwnd reaches W again, which gives as a perfect sawtooth. Thus, after W/2 RTT cwnd reaches W again, which gives as a perfect sawtooth.
  
-{{:public:perfect_cwnd.png | Perfect cwnd}}+{{:public:perfect_cwnd.png?900 | Perfect cwnd}}
  
 The total number of packets per cycle gives us the area under the sawtooth, which is (W/2)<sup>2</sup> + 1/2 (W/2)<sup>2</sup> = 3/8 (W)<sup>2</sup>. The total number of packets per cycle gives us the area under the sawtooth, which is (W/2)<sup>2</sup> + 1/2 (W/2)<sup>2</sup> = 3/8 (W)<sup>2</sup>.
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 Simulating the config for ack every packet and drawing cwnd, bytesInFlight and partialBytesAcked gives us the following diagram. Simulating the config for ack every packet and drawing cwnd, bytesInFlight and partialBytesAcked gives us the following diagram.
  
-{{ :public:mathis_simple.svg | Mathis Simple}}+{{ :public:mathis_simple.svg?900 | Mathis Simple}}
  
 Here, cwnd_max = 12520 bytes which corresponds to W = 10 (MTU is 1280, reduced by IP and UDP header we get 1252 bytes per packet). Here, cwnd_max = 12520 bytes which corresponds to W = 10 (MTU is 1280, reduced by IP and UDP header we get 1252 bytes per packet).
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 Simulating the config for ack every other packet and again drawing cwnd, bytesInFlight and partialBytesAcked gives us the following diagram. Simulating the config for ack every other packet and again drawing cwnd, bytesInFlight and partialBytesAcked gives us the following diagram.
  
-{{ :public:mathis_simple_delayed.svg | Mathis Simple Delayed}} +{{ :public:mathis_simple_delayed.svg?900 | Mathis Simple Delayed}}
-[[Congestion-Avoidance-on-a-lossy-link/mathis_simple_delayed.svg]]+
  
 The important difference here is that the time after the packet loss was detected until cwnd gets increased takes one RTT longer than before. The important difference here is that the time after the packet loss was detected until cwnd gets increased takes one RTT longer than before.
public/congestion_avoidance_on_a_lossy_link.1626102703.txt.gz · Last modified: by msvoelker