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jedisct1 / dsvpn

A Dead Simple VPN.
MIT License
5.17k stars 395 forks source link

High Latency #75

Closed Bestle closed 4 years ago

Bestle commented 4 years ago

I am currently using DSVPN through openmptcprouter to tunnel my UDP traffic to a VPS.

I have noticed that compared to using Glorytun for the same purpose, I have about 50ms of extra latency, is this sort of thing to be expected?

Neither the router nor VPS are anywhere close to being overloaded and overall bandwidth is comparable.

jedisct1 commented 4 years ago

On Linux, dsvpn uses quick acks, but doesn't disable the Nagle algorithm. It means that if very small packets have to be sent, instead of being sent immediately but one by one, they will be sent together.

This improves usage of network resources, improves reliability on lossy networks, and generally the recommended choice.

The flipside is that ping command may show additional latency, but the VPN was optimized for actual applications, not for theping command :) Games may be impacted, but using a VPS is the last thing a gamer would do :)

Bestle commented 4 years ago

I use a VPN for all traffic as it's on my router. Is there any way for me to change this behaviour?