FTP performance

prital · 09-07-2005, 06:54 AM

Hello,
On my board, I need to copy file from the ramdisk to the JFFS2 (on flash). In my application I use the read() and write() functions. The file of size 4Mb is copies in 10 min. The usage of the "dd" tool also gives such performance. It's too much time.

For experiment, I've mounted NFS to my host, put this file on this host, and use the ftp to load the file to JFFS2. The transfer takes 2 min.!

What are the resources that the FTP uses for such performance? How I can reach such performance in my application?
Thank you.

F0ul_Olli · 09-07-2005, 08:41 AM

I'm sorry if I've misunderstood your post but this is what I understand from it.

You have data you are transfering to a LOCAL flash drive (is it connected by USB?)

You are also transfering from an FTP site over a network to the same flash drive.

I would think the problem is more to do with your local set up than the speed of the FTP transfer.

Could you confirm if I have understood this properly - and could you let me know what internet connection you are using?

F0ul Oli

prital · 09-07-2005, 09:05 AM

I have a flash device on my board. Also, this board has an ethernet connection to a host (linuxPC). Also, this board has RAM-disk. I need to write one file to a flash. If I use my application, the file transfer time is very long. If I use ftp connection, the transfer is very quick. The question is, how the ftp connection is established - may be, its priority very high, etc. How I can in my application (that uses write/read functions) to get quick performance?
Thank you.