Upload speed never seems to go above a few MiB/s. Do I need to port forward?

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Nawor3565
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Upload speed never seems to go above a few MiB/s. Do I need to port forward?

Postby Nawor3565 » Tue Apr 14, 2020 5:32 pm

Hello! I recently got fiber optic internet, and now enjoy uncapped 150Mpbs upload speed (which a speed test confirms is accurate; no "up to X speed" garbage, and no bottlenecks on my network). I wanted to take advantage of this and start seeding far more torrents, but even though I've removed the upload speed cap, the upload speed for any individual torrent never goes above a couple hundred KiB/s. Even when I was stuck on 30Mbps cable, I would often get download speeds of a few MiB/s from a single seeder. I was expecting that I could upload more with the extra bandwidth, but my combined upload speed for all torrents is barely 2 MiB/s. I'm trying to figure out which of these is the answer to my problem:

1. The vast majority of torrent downloaders have worse internet than my old cable provider and can't download faster than a few hundred KiB/s.
2. My ISP uses carrier-grade NAT, so I can't port forward Deluge. I've read conflicting answers on whether this would actually affect anything.
3. There's some magical option in the config that will increase my upload speed. I doubt this, but who knows.
4. I'm missing some fundamental concept of torrent clients that would prevent me from reaching the speeds that I see others seeding at.

I would greatly appreciate any advice! Thanks!

mhertz
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Re: Upload speed never seems to go above a few MiB/s. Do I need to port forward?

Postby mhertz » Tue Apr 14, 2020 5:43 pm

It's hard to measure such as could easily be the swarm at the time, like your option 1.

If you don't have your incoming port forwarded, then yeah, indeed a bottleneck.

If not already, then try ltconfig plugin and enable high-performance-seed and either tweak it further to your setup, or just leave it at that preset, which is optimized for high-throughput and resources.

fmar
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Re: Upload speed never seems to go above a few MiB/s. Do I need to port forward?

Postby fmar » Mon May 04, 2020 7:11 pm

Hey Nawor3565

2. My ISP uses carrier-grade NAT, so I can't port forward Deluge. I've read conflicting answers on whether this would actually affect anything.

The port forwarding isn't affecting your speed directly. It's just that you are only connecting to clients with active port forwarding. Since you're connecting to fewer peers, this could lead to lower download or upload speeds.

Definitely try out the High Performance settings with ltConfig. If I upload a new torrent Deluge uses all of my upload speed.


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