how to achieve high speed rate in file transfer

bzlaskar · 04-23-2007, 01:24 AM

Hi,
Can anybody please help me regarding any tool that is suitable for high speed data transfer.
I am doing some FTP file transfer on 100 mbs links on both sides. The FTP transfer is just occuring at the rate of 10 mbs . I have done the necessary tuning for the TCP window size.There is no other traffic , so it is expected that I should receive transfer rate of more than
80mbs per second. So is there is any tool that is suitable for high speed data transfer.

mintojoseph · 04-23-2007, 01:31 AM

use ssh protocol . It is faster and secure.
Use scp command.

acid_kewpie · 04-23-2007, 01:48 AM

don't forget that a 100mbps link can only transfer at a theoretical maximum of about 12 megabytes per second...

bzlaskar · 04-23-2007, 03:20 AM

[QUOTE=acid_kewpie]don't forget that a 100mbps link can only transfer at a theoretical maximum of about 12 megabytes per second...

On what basis you are saying that. Please explain me or any links
that discusses whatever you have written.

acid_kewpie · 04-23-2007, 03:22 AM

because one byte = 8 bits. one Mbyte = 8Mbits, 12Mbytes ~ 100Mbits.

nx5000 · 04-23-2007, 05:08 AM

And 12Mbytes/s includes the header and acknowledge. Not much but if you look at the speed in your ftp client (data only) then probably you won't get more than ~ 11Mbytes.

I would be surprised to see that ssh is faster than ftp?? Might more be the opposite actually.

fur · 04-23-2007, 09:56 AM

SSH is going to be slower than non encrypted protocols. The reason for this is because of the added overhead caused by encrypting/decrypting the packets on both ends that is unnecessary otherwise when using FTP.

I would say upgrade to gigabit if you want faster speeds. However at that point you will most likely find your systems I/O will create a new bottleneck.