I'm not sure what is going on. I'm going to be building a NAS soon, and while I know my network is not at its best, I finally ran iPerf and I was stunned at how bad it was.
Here is what I currently use below:
Router: DLink DGL-4300 with latest firmware
Computer 1: GIGABYTE GA-G33M-DS2R (Realtek RTL8111B) with latest drivers
Computer 2: ASUS M3N78-VM (Realtek 8211CL) with old drivers (haven't updated new ones)
Cables: Cat6, 14 foot and 50 foot
This is TCP over 20 seconds and the output is in MBytes.
bin/iperf.exe -c 192.168.0.118 -P 1 -i 1 -p 5001 -f M -t 20
------------------------------------------------------------
Client connecting to 192.168.0.118, TCP port 5001
TCP window size: 0.01 MByte (default)
------------------------------------------------------------
[3860] local 192.168.0.131 port 1730 connected with 192.168.0.118 port 5001
[ ID] Interval Transfer Bandwidth
[3860] 0.0- 1.0 sec 11.3 MBytes 11.3 MBytes/sec
[3860] 1.0- 2.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 2.0- 3.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 3.0- 4.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 4.0- 5.0 sec 11.6 MBytes 11.6 MBytes/sec
[3860] 5.0- 6.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 6.0- 7.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 7.0- 8.0 sec 11.2 MBytes 11.2 MBytes/sec
[3860] 8.0- 9.0 sec 11.7 MBytes 11.7 MBytes/sec
[3860] 9.0-10.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 10.0-11.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 11.0-12.0 sec 11.7 MBytes 11.7 MBytes/sec
[3860] 12.0-13.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 13.0-14.0 sec 11.6 MBytes 11.6 MBytes/sec
[3860] 14.0-15.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 15.0-16.0 sec 11.2 MBytes 11.2 MBytes/sec
[3860] 16.0-17.0 sec 10.7 MBytes 10.7 MBytes/sec
[3860] 17.0-18.0 sec 10.7 MBytes 10.7 MBytes/sec
[3860] 18.0-19.0 sec 11.1 MBytes 11.1 MBytes/sec
[3860] 19.0-20.0 sec 11.6 MBytes 11.6 MBytes/sec
[ ID] Interval Transfer Bandwidth
[3860] 0.0-20.0 sec 227 MBytes 11.4 MBytes/sec
Done.
Here's UDP, same parameters.
bin/iperf.exe -c 192.168.0.118 -u -P 1 -i 1 -p 5001 -f M -b 1.0M -t 20 -T 1
------------------------------------------------------------
Client connecting to 192.168.0.118, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 0.01 MByte (default)
------------------------------------------------------------
[3860] local 192.168.0.131 port 1744 connected with 192.168.0.118 port 5001
[ ID] Interval Transfer Bandwidth
[3860] 0.0- 1.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 1.0- 2.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 2.0- 3.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 3.0- 4.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 4.0- 5.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 5.0- 6.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 6.0- 7.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 7.0- 8.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 8.0- 9.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 9.0-10.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 10.0-11.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 11.0-12.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 12.0-13.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 13.0-14.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 14.0-15.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 15.0-16.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 16.0-17.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 17.0-18.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 18.0-19.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 19.0-20.0 sec 0.12 MBytes 0.12 MBytes/sec
[ ID] Interval Transfer Bandwidth
[3860] 0.0-20.0 sec 2.39 MBytes 0.12 MBytes/sec
[3860] WARNING: did not receive ack of last datagram after 10 tries.
[3860] Sent 1702 datagrams
Done.
Here is what I currently use below:
Router: DLink DGL-4300 with latest firmware
Computer 1: GIGABYTE GA-G33M-DS2R (Realtek RTL8111B) with latest drivers
Computer 2: ASUS M3N78-VM (Realtek 8211CL) with old drivers (haven't updated new ones)
Cables: Cat6, 14 foot and 50 foot
This is TCP over 20 seconds and the output is in MBytes.
bin/iperf.exe -c 192.168.0.118 -P 1 -i 1 -p 5001 -f M -t 20
------------------------------------------------------------
Client connecting to 192.168.0.118, TCP port 5001
TCP window size: 0.01 MByte (default)
------------------------------------------------------------
[3860] local 192.168.0.131 port 1730 connected with 192.168.0.118 port 5001
[ ID] Interval Transfer Bandwidth
[3860] 0.0- 1.0 sec 11.3 MBytes 11.3 MBytes/sec
[3860] 1.0- 2.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 2.0- 3.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 3.0- 4.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 4.0- 5.0 sec 11.6 MBytes 11.6 MBytes/sec
[3860] 5.0- 6.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 6.0- 7.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 7.0- 8.0 sec 11.2 MBytes 11.2 MBytes/sec
[3860] 8.0- 9.0 sec 11.7 MBytes 11.7 MBytes/sec
[3860] 9.0-10.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 10.0-11.0 sec 11.4 MBytes 11.4 MBytes/sec
[3860] 11.0-12.0 sec 11.7 MBytes 11.7 MBytes/sec
[3860] 12.0-13.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 13.0-14.0 sec 11.6 MBytes 11.6 MBytes/sec
[3860] 14.0-15.0 sec 11.5 MBytes 11.5 MBytes/sec
[3860] 15.0-16.0 sec 11.2 MBytes 11.2 MBytes/sec
[3860] 16.0-17.0 sec 10.7 MBytes 10.7 MBytes/sec
[3860] 17.0-18.0 sec 10.7 MBytes 10.7 MBytes/sec
[3860] 18.0-19.0 sec 11.1 MBytes 11.1 MBytes/sec
[3860] 19.0-20.0 sec 11.6 MBytes 11.6 MBytes/sec
[ ID] Interval Transfer Bandwidth
[3860] 0.0-20.0 sec 227 MBytes 11.4 MBytes/sec
Done.
Here's UDP, same parameters.
bin/iperf.exe -c 192.168.0.118 -u -P 1 -i 1 -p 5001 -f M -b 1.0M -t 20 -T 1
------------------------------------------------------------
Client connecting to 192.168.0.118, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 0.01 MByte (default)
------------------------------------------------------------
[3860] local 192.168.0.131 port 1744 connected with 192.168.0.118 port 5001
[ ID] Interval Transfer Bandwidth
[3860] 0.0- 1.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 1.0- 2.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 2.0- 3.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 3.0- 4.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 4.0- 5.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 5.0- 6.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 6.0- 7.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 7.0- 8.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 8.0- 9.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 9.0-10.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 10.0-11.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 11.0-12.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 12.0-13.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 13.0-14.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 14.0-15.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 15.0-16.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 16.0-17.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 17.0-18.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 18.0-19.0 sec 0.12 MBytes 0.12 MBytes/sec
[3860] 19.0-20.0 sec 0.12 MBytes 0.12 MBytes/sec
[ ID] Interval Transfer Bandwidth
[3860] 0.0-20.0 sec 2.39 MBytes 0.12 MBytes/sec
[3860] WARNING: did not receive ack of last datagram after 10 tries.
[3860] Sent 1702 datagrams
Done.