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Slow sab tips? (lemmy.world)

submitted 11 months ago by [email protected] to c/[email protected]

7 comments fedilink hide all child comments

I recently moved from a non docker ubuntu 18.04 setup to a full docker 22.04 setup. I used to get a pretty consistent 95-105 MB/s in sab. I can't seem to get more than 70 MB/s in my new setup. Both my usenet providers are setup the same and using 50 connections. I'd love to blame docker, but thought i see if anyone here has seen this as well. Any suggestions on what to look at?

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[–] [email protected] 3 points 11 months ago (2 children)

This could be the I/O overhead caused by docker while using NAT networking: https://stackoverflow.com/questions/21889053/what-is-the-runtime-performance-cost-of-a-docker-container#26149994

[–] [email protected] 1 points 11 months ago (1 children)

That's a large penalty, wow.

[–] [email protected] 2 points 11 months ago (1 children)

It's huge for networking. VPN gateway (for accessing the VPN WAN over LAN) on the host is 20-40% faster than dockerized...

[–] [email protected] 1 points 11 months ago

I'm using NAT for sure. All my containers are on a different subnet than the host.

[–] [email protected] 1 points 11 months ago

The article your linked is citing a paper from 2014. Seems hard the believe the network stack hasn't been significantly reworked in 10 years. That being said I don't have anything to refute this.

Does the above still apply if using a glutun VPN docker with other containers connecting directly to glutun?