I've just made an account using a temporary email address since my regular addresses hosted by gmail and yahoo are disallowed here.
Before this, I've searched the forum and the internet in general, but could not find a definitive answer on what is going on or a potential fix. So I have a filezilla server running on my desktop which I use rarely; I keep it stopped, but when I need to transfer large files, I connect to the machine by vpn and vnc when i'm away to start it, then transfer the files and then stop it again. I've had it for many years, it was at version 0.9.50, so over 6 years old when I tried to use it again.
I've installed filezilla client on a laptop at a remote location, it was the latest one 3.57.0, and I also saw there was a new filezilla server and decided to update the server on my machine, again the latest one 1.2.0. After doing so, I've started downloading some files, but I was getting slow speeds of ~5 MiB/s per file, while I was expecting 30+ MiB/s. I'm saying slow since this speed I'm able to get using a site-to-site openvpn connection that is configured on the two routers at my place and this remote one and using smb (CIFS), which is limited by the routers hardware.
After some quick look at the filezilla client settings, filezilla server settings and search on the internet, I couldn't find anything wrong or a fix. The next day I had time to search a bit more and do some tests. Still could not find the cause, but I tried the old 0.9.50 server and the speeds were as I expected them. I've since installed 0.9.60.2, which is the latest 0.9.x version and I'll keep using this until I can make the new version perform close to this one.
I should mention that the update from 0.9.50 to 1.2.0 was done with keeping/converting the settings and thought this had something to do with it, but after uninstalling, cleaning the folders, reinstalling and reconfiguring the 1.2.0 server, the speeds were still low.
Strangely enough, while the single file download speeds are low on 1.2.0 compared with 0.9.60.2, the single file upload speeds are a bit higher. I've attached two images of the filezilla client, one for each filezilla server, 0.9.60.2 and 1.2.0, doing two single file downloads and then two single file uploads. Here is the summary:
- Filezilla server version 0.9.60.2
- Download
- File1- 2.1 GiB in 45 s or ~48 MiB/s
- File2- 3.0 GiB in 66 s or ~46 MiB/s
- Upload
- File1- 2.1 GiB in 46 s or ~46 MiB/s
- File2- 3.0 GiB in 78 s or ~39 MiB/s
- Download
- Filezilla server version 1.2.0
- Download
- File1- 2.1 GiB in 408 s or ~5 MiB/s
- File2- 3.0 GiB in 588 s or ~5 MiB/s
- Upload
- File1- 2.1 GiB in 36 s or ~59 MiB/s
- File2- 3.0 GiB in 52 s or ~59 MiB/s
- Download
I won't be able to test for a while, but I will when I get the chance. Thank you.