Thomas,

I tried two FTPs, one to the machine itself, then to another machine,
using 100MB cards...

Here is my output..

machine out/in to same machine

ftp> put "|dd if=/dev/zero bs=32k count=10000" /dev/null
200 PORT command successful.
150 Opening data connection for /dev/null.
10000+0 records in.
10000+0 records out.
226 Transfer complete.
327680000 bytes sent in 11.05 seconds (2.897e+04 Kbytes/s)
local: |dd if=/dev/zero bs=32k count=10000 remote: /dev/null
ftp> quit

machine out/in to different machine 100MB card same ethernet switch

ftp> put "|dd if=/dev/zero bs=32k count=10000" /dev/null
200 PORT command successful.
150 Opening data connection for /dev/null.
10000+0 records in.
10000+0 records out.
226 Transfer complete.
327680000 bytes sent in 27.84 seconds (1.149e+04 Kbytes/s)
local: |dd if=/dev/zero bs=32k count=10000 remote: /dev/null

So those numbers you mentioned seem low to me.

Tom Melton
Emory HealthCare


>>> thomas.rupp AT ILLWERKE DOT AT 07/23/02 12:50PM >>>
Hi TSM-ers,

our newly installed Gigabit Ethernet seems to have some performance
problems.
When I do the following FTP command between two UNIX (AIX) machines I
only
get about 8Megabyte per second.

# ftp 10.135.11.55
Name: adminrt
Password:
ftp> put "|dd if=/dev/zero bs=32k count=10000" /dev/null
200 PORT command successful.
150 Opening data connection for /dev/null.
10000+0 records in.
10000+0 records out.
226 Transfer complete.
327680000 bytes sent in 39.5 seconds (8102 Kbytes/s)
local: |dd if=/dev/zero bs=32k count=10000 remote: /dev/null

This command transfers data from nowhere to nowhere so no disk
is involved. The performance numbers only include network, network
adapter,
TCP/IP and a bit of UNIX.
Do you think 8MB/s is OK for Gigabit Ethernet?
Would anyone be so kind and test this command in their own UNIX
environment
and tell me the numbers?

Thanks in advance and greetings from Austria
Thomas Rupp
Vorarlberger Illwerke AG
MAIL:   thomas.rupp AT illwerke DOT at
TEL:    ++43/5574/4991-251
FAX:    ++43/5574/4991-820-8251



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