FTP /performance issue question

Hello,

I’m running a test FTPing files between two AIX servers.

Server proa has two network adapters on the same subnet, both Gig-E.

I’ve tested with TSM server, FTPing files from the TSM server directly to
each interface on proa. I’ve also FTPed files back. Below are some averages
of transfer times.

X.X.1.11 interface:

Binary: 65536000 bytes sent in 0.7721 seconds (8.289e+04 Kbytes/s)
ascii: 65536000 bytes sent in 2.203 seconds (2.905e+04 Kbytes/s)


X.X.1.12 interface:

Binary: 65536000 bytes sent in 0.7652 seconds (8.364e+04
Kbytes/s)
ascii: 65536000 bytes sent in 2.224 seconds (2.877e+04 Kbytes/s)

FTPing back to the TSM server from proa, the results were pretty
consistent, taking much longer to FTP the files back from proa to TSM (this
would seem likely considering that I cannot choose which interface to send
files from):

Binary: 65536000 bytes sent in 1.099 seconds (5.821e+04 Kbytes/s)
ascii: 65536000 bytes sent in 1.297 seconds (4.935e+04 Kbytes/s)

Binary: 6536000 bytes sent in 1.121 seconds (5.707e+04 Kbytes/s)
ascii: 65536000 bytes sent in 1.307 seconds (4.898e+04 Kbytes/s)


I’m trying to troubleshoot why it takes so much longer to send a file to
proa regardless of which adapter I connect to, rather then sending a file
from proa. I do realize that when sending the file from proa, I cannot
choose which adapter to send from.

The actual command I am using to send the file once I connect using ftp is:
ftp> put "|dd if=/dev/zero bs=32k count=2000" /dev/null

If anyone would care to shed any light why I may be seeing this symptom, it
would be much appreciated.

TIA

Relevant Pages

  • Re: FTP /performance issue question
    ... Server proa has two network adapters on the same subnet, ... I've tested with TSM server, FTPing files from the TSM server directly ... each interface on proa. ... choose which adapter to send from. ...
    (AIX-L)
  • Re: FTP /performance issue question
    ... Subject: FTP /performance issue question ... Server proa has two network adapters on the same subnet, ... I've tested with TSM server, FTPing files from the TSM server directly ... each interface on proa. ...
    (AIX-L)
  • Re: FTP /performance issue question
    ... routing table should look like with two IP Addresses on the same subnet. ... Server proa has two network adapters on the same subnet, ... I've tested with TSM server, FTPing files from the TSM server directly ... each interface on proa. ...
    (AIX-L)
  • Re: FTP /performance issue question
    ... One thing you should look at is, traceroute. ... Server proa has two network adapters on the same subnet, ... I've tested with TSM server, FTPing files from the TSM server directly ... each interface on proa. ...
    (AIX-L)
  • Re: FTP /performance issue question
    ... Server proa has two network adapters on the same subnet, ... I've tested with TSM server, FTPing files from the TSM server directly ... taking much longer to FTP the files back from proa to TSM ...
    (AIX-L)