Hello,
when I connect my Hetzner box (sFTP) I get this error each time I run sync (sometimes even if I just run Compare check).
Usually, it appears after 1-2 sec. Some files are transferred, and then it shows that error.
I tried 1 connection and 1 thread - no luck.
Any ideas how to fix this? I have the latest version 13.6 on Windows.
Thanks
sFTP error: Unable to startup channel
- Posts: 11
- Joined: 5 Jun 2024
- Attachments
-
- 2.png (22.46 KiB) Viewed 407 times
- Posts: 11
- Joined: 5 Jun 2024
Fixed.
The problem was the limit on the Hetzner box.
Hetzner limits 10 connections from the same IP.
So, I fixed it by setting limits to the sFTP connection as:
- 5 threads
- 5 ftp connections
That is a total of 10 connections.
Important: I set the limit on my SOURCE folder to 10 threads. If I try to change it to a higher number, Hetzner blocks me.
I am still not sure how those two settings work, but I found this configuration faster than for example 1 thread + 10 ftp connections.
Note that the "detect FTP limit" option returned "30" for me - which is not the true limit. Maybe that is the limit on FTP, but there is a different kind of limit on the front that Hetzner added.
I would like to ask the developer to implement WebDav or to throttle and retry the connection in case of limits.
The problem was the limit on the Hetzner box.
Hetzner limits 10 connections from the same IP.
So, I fixed it by setting limits to the sFTP connection as:
- 5 threads
- 5 ftp connections
That is a total of 10 connections.
Important: I set the limit on my SOURCE folder to 10 threads. If I try to change it to a higher number, Hetzner blocks me.
I am still not sure how those two settings work, but I found this configuration faster than for example 1 thread + 10 ftp connections.
Note that the "detect FTP limit" option returned "30" for me - which is not the true limit. Maybe that is the limit on FTP, but there is a different kind of limit on the front that Hetzner added.
I would like to ask the developer to implement WebDav or to throttle and retry the connection in case of limits.
- Site Admin
- Posts: 7163
- Joined: 9 Dec 2007
"Threads" and "connections" is the same, so this still sets up for 5 SFTP connections.The problem was the limit on the Hetzner box.
Hetzner limits 10 connections from the same IP.
So, I fixed it by setting limits to the sFTP connection as:
- 5 threads
- 5 ftp connections
That is a total of 10 connections. bladewinds, 12 Jun 2024, 19:56
Setting the soure folder to 10 threads implicitly also increases target threads/connections to 10:Important: I set the limit on my SOURCE folder to 10 threads. If I try to change it to a higher number, Hetzner blocks me. bladewinds, 12 Jun 2024, 19:56
https://freefilesync.org/manual.php?topic=performance
In order to get more perf, you could increase number of channels:
https://freefilesync.org/manual.php?topic=ftp-setup
- Posts: 11
- Joined: 5 Jun 2024
thank you for the clarification.
- Source threads
- sFTP threads
- sFTP connections
What will give the maximum performance?
Thank you :)
Can you please tell me what configuration would work best in my case? So, the Hetzner limits 10 connections from the same IP, what to enter in each:In order to get more perf, you could increase number of channels:
https://freefilesync.org/manual.php?topic=ftp-setup Zenju, 12 Jun 2024, 21:03
- Source threads
- sFTP threads
- sFTP connections
What will give the maximum performance?
Thank you :)
- Site Admin
- Posts: 7163
- Joined: 9 Dec 2007
With regards to SFTP you can only configure two things, connections and channels per connection.
https://freefilesync.org/manual.php?topic=ftp-setup