blautens

Thanks - and you're right - this would have worked for me, also, had I not already installed the TGZ package from jonathanm. But I really appreciate it the help.

Does this work for you? Outstanding, sir! Works perfectly, thanks! I really appreciate it. Confirms my guesstimates on Windows versus Linux clients. What a difference in iperf test results when using a Windows 8.1 client versus an Ubuntu 12.04 based client (identical Dell hardware, connected to same Gb switch as my Lenovo unRAID server (although to be fair the TCP windows sizes are different): From Windows 8.1 client to unRAID: C:\iperf>iperf -c 192.168.1.59 -P 1 -i 1 -p 5001 -f k -t 10 -T 1 ------------------------------------------------------------ Client connecting to 192.168.1.59, TCP port 5001 TCP window size: 64.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.1.69 port 57839 connected with 192.168.1.59 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 69504 KBytes 569377 Kbits/sec [ 3] 1.0- 2.0 sec 70784 KBytes 579863 Kbits/sec [ 3] 2.0- 3.0 sec 71168 KBytes 583008 Kbits/sec [ 3] 3.0- 4.0 sec 70784 KBytes 579863 Kbits/sec [ 3] 4.0- 5.0 sec 71296 KBytes 584057 Kbits/sec [ 3] 5.0- 6.0 sec 71552 KBytes 586154 Kbits/sec [ 3] 6.0- 7.0 sec 71552 KBytes 586154 Kbits/sec [ 3] 7.0- 8.0 sec 70144 KBytes 574620 Kbits/sec [ 3] 8.0- 9.0 sec 71680 KBytes 587203 Kbits/sec [ 3] 0.0-10.0 sec 709632 KBytes 581214 Kbits/sec From Ubuntu 12.04 to unRAID: bruce@fs2:~$ iperf -c 192.168.1.59 -P 1 -i 1 -p 5001 -f k -t 10 -T 1 ------------------------------------------------------------ Client connecting to 192.168.1.59, TCP port 5001 TCP window size: 21.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.1.68 port 54680 connected with 192.168.1.59 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 112512 KBytes 921698 Kbits/sec [ 3] 1.0- 2.0 sec 111104 KBytes 910164 Kbits/sec [ 3] 2.0- 3.0 sec 111360 KBytes 912261 Kbits/sec [ 3] 3.0- 4.0 sec 113024 KBytes 925893 Kbits/sec [ 3] 4.0- 5.0 sec 111232 KBytes 911213 Kbits/sec [ 3] 5.0- 6.0 sec 110464 KBytes 904921 Kbits/sec [ 3] 6.0- 7.0 sec 111616 KBytes 914358 Kbits/sec [ 3] 7.0- 8.0 sec 112384 KBytes 920650 Kbits/sec [ 3] 8.0- 9.0 sec 111872 KBytes 916455 Kbits/sec [ 3] 9.0-10.0 sec 111104 KBytes 910164 Kbits/sec [ 3] 0.0-10.0 sec 1116800 KBytes 914819 Kbits/sec

I'll second that request. I scoured the Interwebs looking for that package, and even tried to compile my own, but without success. I have no issues doing it on my Ubuntu machine, but I think I would need C++ on my unRAID server and I'm not sure if that's a good idea. Does anyone have a copy of the iPerf 2.05 package for unRAID left over they would care to post? Please?