Slow Samba transfer speed on Windows clients

[larynx]

I searched around for a solution before posting and nothing I tried worked

I'm using FreeNAS-11.1-U4 on Intel Xeon CPU E3-1270 with 32GB ECC RAM. I have Samba enabled with 10 Windows (7 and 10) clients and I'm experiencing very slow transfer speeds from and to the server when using Samba. I ran iperf3 on the FreeNAS box and got these results


[ 4] local 192.168.1.21 port 64947 connected to 192.168.1.14 port 5201
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 109 MBytes 914 Mbits/sec
[ 4] 1.00-2.00 sec 110 MBytes 921 Mbits/sec
[ 4] 2.00-3.00 sec 109 MBytes 915 Mbits/sec
[ 4] 3.00-4.00 sec 109 MBytes 916 Mbits/sec
[ 4] 4.00-5.00 sec 110 MBytes 921 Mbits/sec
[ 4] 5.00-6.00 sec 109 MBytes 918 Mbits/sec
[ 4] 6.00-7.00 sec 109 MBytes 916 Mbits/sec
[ 4] 7.00-8.00 sec 109 MBytes 917 Mbits/sec
[ 4] 8.00-9.00 sec 110 MBytes 921 Mbits/sec
[ 4] 9.00-10.00 sec 110 MBytes 922 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 1.07 GBytes 918 Mbits/sec sender
[ 4] 0.00-10.00 sec 1.07 GBytes 918 Mbits/sec receiver


The network cards, cables, switches and router are all capable of Gigabit speed. The Samba configuration files doesn't have any additional configuration options (although I did try to add a few to see if they'll help, which they didn't)

 

[Ericloewe]

Network looks fine.

What exactly are you moving around? Tons of tiny files will always be painfully slow.

 

[larynx]

It seems like the issue is specifically while dealing Quickbooks files (20-150MB) through Samba so I'll have a look at Quickbooks-specific solutions