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General • UDP faster than TCP - why?

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Hi,

after my issue with the 287 Mbps TCP (single stream) throughput (CCR1072) was clear to my:
viewtopic.php?t=204905

I testet with UDP (single stream) and it reached almost 850-900 Mbps throughput.
The questiosn is - and what I want to understand -, why has TCP vs. UDP such an immense influence in regards to the throughput?

Out of the perspective of the router, both is IP-traffic, why has the layer 4 protocol such an impact? I dont understand.
The more I think about it, the more I get confused.

For the CCR1072 I tested, I found out the figures are quite accurate (always divided by 72 for single core, which I learned):
Unbenannt.JPG

Both, TCP and UDP, tests are carried out with 1500 byte packets.

Statistics: Posted by Guscht — Fri Feb 23, 2024 12:12 pm



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