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Tradeoffs in the persistent congestion threshold #4215

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merged 3 commits into from Oct 15, 2020
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Tradeoffs in the persistent congestion threshold #4215

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Tradeoffs of persistent congestion threshold
janaiyengar Oct 14, 2020
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Update draft-ietf-quic-recovery.md
janaiyengar Oct 15, 2020
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janaiyengar Oct 15, 2020
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4 changes: 2 additions & 2 deletions draft-ietf-quic-recovery.md
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Expand Up @@ -951,8 +951,8 @@ This duration allows a sender to send as many packets before establishing
persistent congestion, including some in response to PTO expiration, as TCP does
with Tail Loss Probes ({{RACK}}) and a Retransmission Timeout ({{?RFC5681}}).

As the value kPersistentCongestionThreshold gets larger, the sender becomes
increasingly unresponsive to persistent congestion in the network, which can
Larger values of kPersistentCongestionThreshold cause the sender to
become less responsive to persistent congestion in the network, which can
result in aggressive sending into a congested network. Too small a value can
result in a sender declaring persistent congestion unnecessarily, resulting in
reduced throughput for the sender.
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