Slow file transfer
Posted on 2011-09-14
I am transferring a 1gb file using FTP and the link is 1gb but it is taking over 5 minutes to transfer.
In wireshark I opened the expert infos composite window.
In the experts infos:
I have no errors
I have these warnings:
Window is full 20
Zero Window 17
ACKed lost segment (common at capture start) 63
Previous segment los (common st caputre start) 78
Out-Of-Order segment 187
Fast retransmission (suspected) 14
This was on a 1gb ftp file transfer
The IO graph Y axis shows 50000 when set to auto and the graph varies around 30000
In the notes I have Duplicate ACK (#41) for FTP an FTP data packet
I am trying to narrow down to network or server problem.