Network transfers slow

[petterrabbit]

I'm having a tough time getting max network transfer speeds.

My windows transfers are capping around 40MB/s.

I'm not really sure where to start.

Thanks in advance.

I am running
(2) seagate 3TB drives (mirrored)
Freenas 9.1.1
ZFS file system
CAT6 cabling
Linksys Ea4500

ifconfig shows media at 1000BaseT & active.


Hardware Specs:

• AMD A10-5800K (100W) Quad-Core Socket FM2, 3.8GHz APU, 4Mb Cache, 32nm
• Gigabyte GA-F2A85XM-D3H Socket FM2 AMD A85X Chipset
• Intel (EXPI9301CT) Gigabit CT Desktop Adapter, PCI Express Slot
• Patriot Viper 3 Mamba Black 16GB (2x8GB) DDR3 1600MHz CL9 DIMMs (PV316G160C9K)
• 2x Seagate Desktop HDD 3TB 3.5" SATA3 64MB Cache

DD Test:

[root@liberty35 ~]# dd if=/dev/zero of=/mnt/four/temp bs=2048k count=10000​

10000+0 records in​

10000+0 records out​

20971520000 bytes transferred in 104.568679 secs (200552595 bytes/sec)​

[root@liberty35 ~]# dd if=/dev/zero of=/mnt/four/temp bs=1024k count=10000​

10000+0 records in​

10000+0 records out​

10485760000 bytes transferred in 77.667163 secs (135008923 bytes/sec)​

[root@liberty35 ~]# dd if=/dev/zero of=/mnt/four/temp bs=4096k count=10000​

10000+0 records in​

10000+0 records out​

41943040000 bytes transferred in 283.978327 secs (147698032 bytes/sec)​

[root@liberty35 ~]#​

Iperf:

bin/iperf.exe -c 192.168.1.151 -P 1 -i 1 -p 5001 -f M -t 10
------------------------------------------------------------
Client connecting to 192.168.1.151, TCP port 5001
TCP window size: 0.01 MByte (default)
------------------------------------------------------------
[156] local 192.168.1.142 port 56846 connected with 192.168.1.151 port 5001
[ ID] Interval Transfer Bandwidth
[156] 0.0- 1.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 1.0- 2.0 sec 40.7 MBytes 40.7 MBytes/sec
[156] 2.0- 3.0 sec 41.0 MBytes 41.0 MBytes/sec
[156] 3.0- 4.0 sec 40.7 MBytes 40.7 MBytes/sec
[156] 4.0- 5.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 5.0- 6.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 6.0- 7.0 sec 41.0 MBytes 41.0 MBytes/sec
[156] 7.0- 8.0 sec 41.0 MBytes 41.0 MBytes/sec
[156] 8.0- 9.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 9.0-10.0 sec 41.0 MBytes 41.0 MBytes/sec
[156] 0.0-130.0 sec 409 MBytes 3.15 MBytes/sec
read on server close failed: Connection reset by peer
Done.

bin/iperf.exe -c 192.168.1.151 -P 1 -i 1 -p 5001 -f M -t 10
------------------------------------------------------------
Client connecting to 192.168.1.151, TCP port 5001
TCP window size: 0.01 MByte (default)
------------------------------------------------------------
[156] local 192.168.1.142 port 56917 connected with 192.168.1.151 port 5001
[ ID] Interval Transfer Bandwidth
[156] 0.0- 1.0 sec 40.8 MBytes 40.8 MBytes/sec
[156] 1.0- 2.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 2.0- 3.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 3.0- 4.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 4.0- 5.0 sec 41.0 MBytes 41.0 MBytes/sec
[156] 5.0- 6.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 6.0- 7.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 7.0- 8.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 8.0- 9.0 sec 40.9 MBytes 40.9 MBytes/sec
[156] 9.0-10.0 sec 40.8 MBytes 40.8 MBytes/sec
[156] 0.0-130.0 sec 409 MBytes 3.14 MBytes/sec
read on server close failed: Connection reset by peer
Done.​