Transfer speed question

[NikonMike]

I'm fairly new to Mac and Cyberduck.

When using SFTP with Cyberduck I'm getting really low transfer rates (around 25 kB/s).

When using WinSCP in Parallels I get 150 kB/s (same machine, same internet connection, same time, same server).

Anybody has an idea what can be wrong? I haven't changed any Preferences other than Appearance. Thanks!

UPDATE:

I tried FTP mode and with servers that allow it I got much better speeds! However most servers require SFTP these days. I also tried with Transmit and it was fast even with SFTP. Could it be encryption settings in Cyberduck?

[jazzu]

When using SFTP with Cyberduck I'm getting really low transfer rates (around 25 kB/s).

Same here. SCP transfer mode with eg. Fugu or from command line performs much snappier, giving 300kB/s for same server from where Cyberduck transfers data with a meager 21kB/s speed.

Is the problem with some underlying libraries or in Cyberduck itself? Otherwise it's much more better to use that the Fugu, which it's current incarnation crashes between half of the browsing/download actions...

[NikonMike]

Same here. [...] Cyberduck transfers data with a meager 21kB/s speed.

Good to hear that I'm not the only one with this problem! In the meantime, I tried to use Transmit, Fetch, OS X command-line sftp and Fugu (which I understand wraps the OS X CL), they all perform consistently - and much better than Cyberduck.

Let's try the opposite question - is anybody getting good performance (like 300 kB/s) with Cyberduck 2.7.2 in SFTP mode?

UPDATE:

This thread appears to offer an explanation:

http://forums.cocoaforge.com/viewtopic.php?t=11569

Some improvement can be achieved by tweaking the buffer size, but not much as far as I could see. And there's a danger of "overdoing" it...