[mikex]

I have 1280 mtu on a client and server side, btw

[mikex]

OK, I little bit flood support forume, but =))

In transparent Mode I have significant perf issues, I have 800mbs network, and gets drop in network speed as 2-6 times worse, I can’t understand issue, but think it is something in wiresock core. Wireshark shows on wiresock Interface a lot of retransmissions, lost packets and sufficient delays in packets transmission

I run speed.cloudflare and see 5-10% of losses, as well as upload speed drops as 2x-4x times and download as 4x-6x times

Any suggestions how to investigate these issues and find bottle-neck?

[mikex]

Hmmm, seems this rebind example what I need to see, since I have really big performance issues with wiiresock

@feller was you able to solve your issues with MSS clamping?

[mikex]

Does wiresock implement some complicated logic to handle performance issues as mtu missmatch, packets drops due to processing speed issue?

I guess wiresock can’t handle high-load traffic for application’s vpn as it intends to process each packet (what I know from ndisapi examples) before send it to Wireguard. But hope I am wrong

[mikex]

I constantly get downgrade by 2-6 times in download/upload for speedtest.net and speed.cloudflare. Even don’t know what to see, since wireshark logs are full of retransmissions and out-of-order but no one record for ip fragmentation

[mikex]

Have the same issue, even worse on 1gb network. Wiresock seems unusable on networks >= 1gb

[mikex]

does wiresock have public code source?

[mikex]

can I somehow wireshark for that case?

[mikex]

Also I use mtu 1280 on both sides – wireguard client and server have mtu == 1280

[mikex]

How to check and ensure that issue is fragmented WireGuard UDP packets?

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