Can't reach 10Gb transfer

  • My server has 2 adapters. The 1G connect to router for media things. The 10G SFP+ connect direct to my PC use static ip.
    Server build:
    Xeon E-2176G
    8*2G DDR4
    nvme OS drive
    Intel P4502 for storage (can run 1600/1000MB/s in windows)


    Win10 PC to NAS transfer:start at about 1GB/s, and drop to 300-400MB in few seconds. It stays at 300+. I've tried SMB and FTP, all the same.
    NAS to PC: slower than that.
    I know that smb isn't high efficiency. So is there any way to improve speed? I hope it can stable at 800MB/s+.

    • Offizieller Beitrag

    How do you test?


    I suspect that you test the combination of network speed, network filesystem and disk filesystem.


    The network speed might be fine but one or both the other factors bad. On either the client or the server.


    Check out iperf3. Free software for both Linux and Windows. It allows you to test the network speed specifically.


    And iperf3 is already installed in you OMV NAS. At least it is on mine (Odroid HC2).


    I just ran a test between two of my OMV servers. They are connected using GbE via a switch.


    On nas0 (server) I ran:



    perf3 -s -f K



    On nas2 (client) I ran:


    iperf3 -c nas0 -f K


    And I got this result:


    Connecting to host nas0, port 5201
    [ 4] local 192.168.1.102 port 41984 connected to 192.168.1.100 port 5201
    [ ID] Interval Transfer Bandwidth Retr Cwnd
    [ 4] 0.00-1.00 sec 109 MBytes 111954 KBytes/sec 0 455 KBytes
    [ 4] 1.00-2.00 sec 111 MBytes 113343 KBytes/sec 0 455 KBytes
    [ 4] 2.00-3.00 sec 111 MBytes 113277 KBytes/sec 0 478 KBytes
    [ 4] 3.00-4.00 sec 111 MBytes 113226 KBytes/sec 0 478 KBytes
    [ 4] 4.00-5.00 sec 110 MBytes 113137 KBytes/sec 0 478 KBytes
    [ 4] 5.00-6.00 sec 110 MBytes 112130 KBytes/sec 0 612 KBytes
    [ 4] 6.00-7.00 sec 110 MBytes 112972 KBytes/sec 0 612 KBytes
    [ 4] 7.00-8.00 sec 110 MBytes 112920 KBytes/sec 0 612 KBytes
    [ 4] 8.00-9.00 sec 110 MBytes 112772 KBytes/sec 0 612 KBytes
    [ 4] 9.00-10.00 sec 110 MBytes 112642 KBytes/sec 0 612 KBytes
    - - - - - - - - - - - - - - - - - - - - - - - - -
    [ ID] Interval Transfer Bandwidth Retr
    [ 4] 0.00-10.00 sec 1.08 GBytes 112837 KBytes/sec 0 sender
    [ 4] 0.00-10.00 sec 1.07 GBytes 112689 KBytes/sec receiver



    iperf Done.

Jetzt mitmachen!

Sie haben noch kein Benutzerkonto auf unserer Seite? Registrieren Sie sich kostenlos und nehmen Sie an unserer Community teil!