FTPS Traffic slow

Hello all! I’m having a strange issue with transferring files via FTP/FTPS. I use Filezilla to occasionally download large files, and I’ve noticed over the last couple of weeks that my traffic seems to be capped at about 250k, when I should be getting about 11 MB a second. I know this, because I can download the files with a laptop, and I get the correct speeds.

I’ve tried the following so far:

  1. Reinstalling the FTP client
  2. Deleting my local config files, and re-configuring the connection
  3. Switching to SFTP (I get about 1MB a second
  4. Switching FTP clients (I’ve tried Dolphin, Krusader, and the CLI, all seem to have the same limit)
  5. Plugging another machine into the network port the affected machine is using. I get full speeds.

It seems like something OS level in OpenSUSE, but I don’t know where to start looking. I checked in YAST, and my local firewall is off. Does anyone have any other suggestions on what I can check?

Thanks!

A useful troubleshooting guide:

Thanks for the link! I double checked those settings, but it didn’t seem to help I’m afraid.

Did you rule out that it is not a problem of the other side? You could do so but trying another site or trying another computer to the same site.

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Yes, I tested with another machine, and it works OK from there.

Okay, re-reading I saw you already mentioned you tried with a laptop.

Some more details would be good, was the laptop on the same subnet and was it running also Tumbleweed? If the laptop is not running Tumbleweed, try running a Tumbleweed Live image from an USB stick (Try openSUSE Tumbleweed - Get openSUSE, Alternative downloads)

Would be also good to find out if the problem is limited to FTP, so do you have good download speeds using HTTP?

Debugging speed problems is not easy, the best way is often to find something that works fine and then make the differences as small as possible.

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