will this thing happens in the begining of the connection, so the port would change from 21 only once, when the connection happens, so I don't think that this has to do with every file got or put on the server.
Hi Faisal,
Sometime ago, I had to get some info on FTP so I ended up reading part of the RFC on FTP,
I could be wrong, but I do remember reading that FTP creates sockets on different ports (other than 21)
behind the scenes to transfer the files, it could be the overhead of creating/deleting each socket for each file
as we know FTP utilizes TCP which means handshaking overhead.
Faisal I think you can change the transfer type between two options, Passive FTP or sth…
Add on top of that the IO time like my fellow friends pointed out, and I guess we
Have a good explanation don't you think!..
Just my $0.02.. and I could be way to wrong :D
Fadi .K
From: [EMAIL PROTECTED] [mailto: [EMAIL PROTECTED]] On Behalf Of Al-Faisal
Sent: Sunday, June 11, 2006 12:03 PM
To: Jordan Linux User Group Mailing list
Subject: [JoLUG-General] FTP Question
Hey guys,
I have been using FTP a lot lately to upload/download files from a web server, and i have noticed that when you download or upload one large file, it takes less time (far less time) than a group of smaller files with the same total size.
Since i am not much of an expert in networking, I just started wondering as to why that happens? is that normal? does perhaps initializing the streams for every file consume that much time?
I tried it using a Java applet provided by the web hosting provider, and the FTP command on the shell.
Just a curious mind wondering, thanks in advance.
--
Al-Faisal El-Dajani
Tel: +962-7-88 719 685
P.O Box: 140056
11814 Amman, Jordan
May the source be with you
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Ala'a A. Ibrahim
http://www.alaa-ibrahim.info/
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