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Update MTU post

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Neil Alexander 2018-07-13 10:31:17 +01:00
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_posts/2018-07-13-about-mtu.md
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@ -66,10 +66,11 @@ substantial performance drop whilst the operating system throttles down that
inner TCP connection to cope with what it believes to be congestion.
However, by using large MTUs, and therefore larger window sizes on the inner TCP
connection, we send far less TCP control messages over the wire - as many as 43
times less - therefore there are far less control messages from the inner
connection which may be affected or amplified by retransmission. This helps to
stabilise performance on the inner TCP connections.
connection, we send far less TCP control messages over the wire - possibly up to
as many as 43 times less - therefore there are far less opportunities for
control messages on the inner connection to be affected or amplified by
retransmission. This helps to stabilise performance on the inner TCP
connections.
There are also some other clever things taking place at the Yggdrasil TCP layer.
In particular, LIFO queues are used for session traffic, which results in