SFTP download speed slow
Posted: Wed Mar 13, 2013 9:45 pm
Hi,
[Update: I am using JFileUpload 2.9. I'm going to try 3.0 soon ....]
I am trying to use JFileDownload with SFTP to download large files (10MB - 10GB) from a bioinformatics sftp server. My platform is Mac OS X 10.7, using latest Java 7 in Safari or Firefox.
However, I notice that the performance is not very good. The applet consistently downloads 8-10 times slower than clients like FileZilla and Transmit. Sample times in a recent test: the applet ranged from 190-200 KB/s, whereas FileZilla and Transmit ranged from 1.5-1.7 MB/s
Is it possible to configure JFIleDownload+SFTP to be faster? I don't see any configuration parameters that would control buffer size or similar .... Is there something I could have done that would slow things down?
BTW, the server is a Globalscape EFT server. When I use Globalscape's own Java-based client, I see transfer speeds as fast as FileZilla and Transmit. Globalscape is listed as a JFileUpload customer, so my results are especially interesting.
Thanks!
[Update: I am using JFileUpload 2.9. I'm going to try 3.0 soon ....]
I am trying to use JFileDownload with SFTP to download large files (10MB - 10GB) from a bioinformatics sftp server. My platform is Mac OS X 10.7, using latest Java 7 in Safari or Firefox.
However, I notice that the performance is not very good. The applet consistently downloads 8-10 times slower than clients like FileZilla and Transmit. Sample times in a recent test: the applet ranged from 190-200 KB/s, whereas FileZilla and Transmit ranged from 1.5-1.7 MB/s
Is it possible to configure JFIleDownload+SFTP to be faster? I don't see any configuration parameters that would control buffer size or similar .... Is there something I could have done that would slow things down?
BTW, the server is a Globalscape EFT server. When I use Globalscape's own Java-based client, I see transfer speeds as fast as FileZilla and Transmit. Globalscape is listed as a JFileUpload customer, so my results are especially interesting.
Thanks!