As the files get larger the transfer times seem to go up exponentially. Any thoughts why this ftp has it time increase so much?
bridged:
ftp> send siqtrng_data_4m_01.dbf
200 PORT command successful.
150 Opening BINARY mode data connection for siqtrng_data_4m_01.dbf.
226 Transfer complete.
1572866048 bytes sent in 1152.61 seconds (1332.63 Kbytes/s)
not bridged:
ftp> send siqtrng_data_4m_01.dbf
200 PORT command successful.
150 Opening BINARY mode data connection for siqtrng_data_4m_01.dbf.
226 Transfer complete.
1572866048 bytes sent in 253.49 seconds (6059.38 Kbytes/s)
--
Mike Cannon
Infrastructure Systems Administrator
Management Information
Purdue University
1061 Freehafer Hall (FREH)
West Lafayette, IN 47907-1061
office phone: 765.494.6357
office fax: 765.496.1380
email: [EMAIL PROTECTED]
-----Original Message-----
From: Cannon, Mike R.
Sent: Tuesday, October 09, 2001 3:05 PM
To: '[EMAIL PROTECTED]'; Cannon, Mike R.
Cc: 'Lennert Buytenhek'
Subject: Bridge 2.4.10 testing
bridge overhead information and question:
I am still running my original bridge configuration with the experimentally patch on the 2.4.10 kernel. I have done some initial performance testing. I did 4 test with two different servers to the same workstation:
no bridge
UNIX ftp
38164563 bytes sent in 6.3 seconds (5.9e+03 Kbytes/s) same 36.3 MB file below for NT SSL transfer
38164563 bytes sent in 6.2 seconds (6e+03 Kbytes/s) same 36.3 MB file below for NT SSL transfer
672202181 bytes sent in 1.2e+02 seconds (5.6e+03 Kbytes/s)
672202181 bytes sent in 1.3e+02 seconds (5.2e+03 Kbytes/s)
NT SSL file transfer
36.3 MB in 15 sec 2.42 MB/sec
36.3 MB in 15 sec 2.42 MB/sec
36.3 MB in 15 sec 2.42 MB/sec
bridge with 3Com switch
UNIX ftp
38164563 bytes sent in 10 seconds (3.7e+03 Kbytes/s) same 36.3 MB file below for NT SSL transfer
38164563 bytes sent in 9.9 seconds (3.8e+03 Kbytes/s) same 36.3 MB file below for NT SSL transfer
672202181 bytes sent in 1.8e+02 seconds (3.6e+03 Kbytes/s)
672202181 bytes sent in 1.8e+02 seconds (3.6e+03 Kbytes/s)
NT SSL file transfer
36.3 MB in 21 sec 1.73 MB/sec
36.3 MB in 22 sec 1.65 MB/sec
36.3 MB in 17 sec 2.14 MB/sec
for ftp on the 36.2 MB file we add 4 sec when using the bridge
for ssl on the 36.2 MB file we add 2 to 7 sec when using the bridge
Do these figures look accurate for the over head that is added to packets moving through the bridge? I realize that there are lots of variables like machine speed and NIC drivers/settings, but just initially might these look correct?
--
Mike Cannon
Infrastructure Systems Administrator
Management Information
Purdue University
1061 Freehafer Hall (FREH)
West Lafayette, IN 47907-1061
office phone: 765.494.6357
office fax: 765.496.1380
email: [EMAIL PROTECTED]
