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by rand0mstring
2271 days ago
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anyone have thoughts on this? "Optimization, again. TCP is implemented in the kernel and, in part, in the network card. When using TCP we can make one call to the kernel to hand it a large buffer of data and say “segment and package this as you see fit”. When using UDP, because we have to do that segmenting and packaging ourselves, we hand each packet individually the kernel. Each call to the kernel is expensive and the overhead becomes very significant, especially in Go. The kernel’s TCP stack is also highly optimized for performance while the kernel’s UDP stack is typically not." https://forum.syncthing.net/t/connections-over-udp/9382 |
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