Service – FreeNAS + LAGG Slow Transfer?


I have built a new file server that should be well built for its purpose. It has 2 Intel (R) Xeon (R) CPU E5-2660 v3 with 128 GB RAM and runs LCAP via an Intel X540T2 network card to a Netgear GS752TP switch. Our router is an Ubiquiti EdgeMax

When trying to transfer 1 GB of data to it, the speed remains at 12 Mbit / s. I've seen it reach up to 25Mbps, but it has dropped to 500Kbps. Both in short bursts.

I ran two iperf Tests, one with "-u -b 1000m" at the end and the other with nothing. I will post the results below.

My question is why this transfer is so slow and hardwired on all GB devices. Could something be configured?

I appreciate any advice you have for me.

Test results 1 from the computer with "-u -b 1000m"

    ( ID) Interval           Transfer     Bandwidth       Total Datagrams
(  4)   0.00-1.00   sec   109 MBytes   918 Mbits/sec  14012
(  4)   1.00-2.00   sec  94.2 MBytes   790 Mbits/sec  12061
(  4)   2.00-3.00   sec   104 MBytes   871 Mbits/sec  13293
(  4)   3.00-4.00   sec   108 MBytes   906 Mbits/sec  13827
(  4)   4.00-5.00   sec   113 MBytes   952 Mbits/sec  14527
(  4)   5.00-6.00   sec   114 MBytes   953 Mbits/sec  14545
(  4)   6.00-7.00   sec   111 MBytes   930 Mbits/sec  14197
(  4)   7.00-8.00   sec   109 MBytes   918 Mbits/sec  14014
(  4)   8.00-9.00   sec   114 MBytes   956 Mbits/sec  14582
(  4)   9.00-10.00  sec   103 MBytes   868 Mbits/sec  13244
- - - - - - - - - - - - - - - - - - - - - - - - -
( ID) Interval           Transfer     Bandwidth       Jitter    Lost/Total Datagrams
(  4)   0.00-10.00  sec  1.06 GBytes   906 Mbits/sec  0.044 ms  50745/138072 (37%)
(  4) Sent 138072 datagrams

iperf Done.

Test 1 results from the server with "-u -b 1000m"

( ID) Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
(  5)   0.00-1.00   sec  65.2 MBytes   547 Mbits/sec  0.047 ms  4776/13117 (36%)
(  5)   1.00-2.00   sec  68.4 MBytes   574 Mbits/sec  0.062 ms  3333/12089 (28%)
(  5)   2.00-3.00   sec  68.3 MBytes   573 Mbits/sec  0.060 ms  4448/13192 (34%)
(  5)   3.00-4.00   sec  67.8 MBytes   569 Mbits/sec  0.021 ms  4993/13675 (37%)
(  5)   4.00-5.00   sec  68.6 MBytes   575 Mbits/sec  0.053 ms  5901/14676 (40%)
(  5)   5.00-6.00   sec  68.3 MBytes   573 Mbits/sec  0.088 ms  5883/14629 (40%)
(  5)   6.00-7.00   sec  68.0 MBytes   570 Mbits/sec  0.037 ms  5455/14155 (39%)
(  5)   7.00-8.00   sec  67.6 MBytes   567 Mbits/sec  0.037 ms  5659/14306 (40%)
(  5)   8.00-9.00   sec  68.4 MBytes   573 Mbits/sec  0.029 ms  5581/14330 (39%)
(  5)   9.00-10.00  sec  68.5 MBytes   574 Mbits/sec  0.161 ms  4522/13288 (34%)
(  5)  10.00-10.05  sec  3.29 MBytes   600 Mbits/sec  0.044 ms  194/615 (32%)
- - - - - - - - - - - - - - - - - - - - - - - - -
( ID) Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
(  5)   0.00-10.05  sec   682 MBytes   570 Mbits/sec  0.044 ms  50745/138072 (37%)  receiver

Test 2 results from the computer

( ID) Interval           Transfer     Bandwidth
(  4)   0.00-1.00   sec  26.8 MBytes   224 Mbits/sec
(  4)   1.00-2.00   sec  29.2 MBytes   246 Mbits/sec
(  4)   2.00-3.00   sec  29.8 MBytes   250 Mbits/sec
(  4)   3.00-4.00   sec  30.2 MBytes   254 Mbits/sec
(  4)   4.00-5.00   sec  30.0 MBytes   251 Mbits/sec
(  4)   5.00-6.00   sec  29.8 MBytes   250 Mbits/sec
(  4)   6.00-7.00   sec  30.0 MBytes   252 Mbits/sec
(  4)   7.00-8.00   sec  28.0 MBytes   235 Mbits/sec
(  4)   8.00-9.00   sec  28.8 MBytes   241 Mbits/sec
(  4)   9.00-10.00  sec  30.0 MBytes   252 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
( ID) Interval           Transfer     Bandwidth
(  4)   0.00-10.00  sec   292 MBytes   245 Mbits/sec                  sender
(  4)   0.00-10.00  sec   292 MBytes   245 Mbits/sec                  receiver

iperf Done.

Test 2 results from the server

( ID) Interval           Transfer     Bitrate
(  5)   0.00-1.00   sec  26.5 MBytes   222 Mbits/sec
(  5)   1.00-2.00   sec  29.4 MBytes   247 Mbits/sec
(  5)   2.00-3.00   sec  29.6 MBytes   248 Mbits/sec
(  5)   3.00-4.00   sec  30.3 MBytes   254 Mbits/sec
(  5)   4.00-5.00   sec  29.9 MBytes   251 Mbits/sec
(  5)   5.00-6.00   sec  29.7 MBytes   249 Mbits/sec
(  5)   6.00-7.00   sec  30.0 MBytes   252 Mbits/sec
(  5)   7.00-8.00   sec  28.2 MBytes   236 Mbits/sec
(  5)   8.00-9.00   sec  28.7 MBytes   241 Mbits/sec
(  5)   9.00-10.00  sec  30.0 MBytes   252 Mbits/sec
(  5)  10.00-10.02  sec   128 KBytes  51.2 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
( ID) Interval           Transfer     Bitrate
(  5)   0.00-10.02  sec   292 MBytes   245 Mbits/sec                  receiver