Slow USB3 speed - Does the Backports kernel in OMV3 support this PCIE card?

  • I'm really getting knee deep into OMV and I'm almost there. I bought a PCI-E USB3 card so that I can transfer files from an external USB3 drive to the NAS and also use the external USB drive for backup. However, I am getting a maximum of 55 MB/s read speed. As a result, my write speed is 55 MB/s to my internal hard drive. I have 'Debian Backports' enabled in OMV Extras. However, I can't see anything in plugins that includes installing anything related to it as such. Am I missing something? Does OMV3 support what I'm trying to do (USB3 speed from external USB3 HD via USB3 PCI-E card)?


    The item I bought can be seen here:


    https://www.amazon.co.uk/gp/pr…age_o05_s00?ie=UTF8&psc=1


    I "think" that this card has a VLI chip (judging from the photo). I'll have to take a look at it in my case if anyone needs this info.


    Many thanks

    NAS OMV 3.0.59 Rig: DFI Lanparty nForce4 SLI-DR | Opteron 165 Dual Core (no overclock) | 4GB Corsair Non-ECC DDR400 RAM | OMV3: 1x100GB IDE | Data: 2x 250GB WD 7200rpm, 2x 3TB WD Red, 1x 4TB Samsung 5400rpm

  • I guess this is a good thing right? My card should be compatible and providing USB3 speeds?

    NAS OMV 3.0.59 Rig: DFI Lanparty nForce4 SLI-DR | Opteron 165 Dual Core (no overclock) | 4GB Corsair Non-ECC DDR400 RAM | OMV3: 1x100GB IDE | Data: 2x 250GB WD 7200rpm, 2x 3TB WD Red, 1x 4TB Samsung 5400rpm

  • Maybe it is connected USB 2.0 high speed (480mbps=60mb/s?)
    Could you post output of `lsusb -v`
    Also VIA chip is taiwan company known as poor linux support try NEC/renesas or other vendor


    Also Try disable vt-d(iommu) in bios and `vim /etc/default/grub` add parameter `iommu=soft` to GRUB_CMDLINE_LINUX
    After that`update-grub` , `reboot`

    OMV3 on Proxmox
    Intel E3-1245 v5 | 32GB ECC RAM | 4x3TB RAID10 HDD
    omv-zfs | omv-nginx | omv-letsencrypt | omv-openvpn
    Click link for more details

  • Maybe it is connected USB 2.0 high speed (480mbps=60mb/s?)
    Could you post output of `lsusb -v`
    Also VIA chip is taiwan company known as poor linux support try NEC/renesas or other vendor


    Also Try disable vt-d(iommu) in bios and `vim /etc/default/grub` add parameter `iommu=soft` to GRUB_CMDLINE_LINUX
    After that`update-grub` , `reboot`


    Thanks for the help on this.. below is 'some' of the output from lsusb -v. I've put the full output in the attached 'usb.txt' in order to avoid the character limit


    Does everything appear to be working properly (hardware wise)?

    Files

    • usb.txt

      (20.83 kB, downloaded 250 times, last: )

    NAS OMV 3.0.59 Rig: DFI Lanparty nForce4 SLI-DR | Opteron 165 Dual Core (no overclock) | 4GB Corsair Non-ECC DDR400 RAM | OMV3: 1x100GB IDE | Data: 2x 250GB WD 7200rpm, 2x 3TB WD Red, 1x 4TB Samsung 5400rpm

  • It seems nothing wrong for me..
    Did you test read speed using SSD not hard disk? or directly attached hard disk to sata, and comparing speed
    (`hdparm -Tt /dev/sdX`)

    OMV3 on Proxmox
    Intel E3-1245 v5 | 32GB ECC RAM | 4x3TB RAID10 HDD
    omv-zfs | omv-nginx | omv-letsencrypt | omv-openvpn
    Click link for more details

  • It seems nothing wrong for me..
    Did you test read speed using SSD not hard disk? or directly attached hard disk to sata, and comparing speed
    (`hdparm -Tt /dev/sdX`)

    Thanks for this. I had other terminal issues which is why I put the USB speed issue on the backburner..


    I just ran your command and received the following:


    Code
    sudo hdparm -Tt /dev/sde1
    /dev/sde1:
    Timing cached reads: 1282 MB in 2.00 seconds = 640.95 MB/sec
    Timing buffered disk reads: 462 MB in 3.01 seconds = 153.62 MB/sec

    So according to this.. I guess all is well right?

    NAS OMV 3.0.59 Rig: DFI Lanparty nForce4 SLI-DR | Opteron 165 Dual Core (no overclock) | 4GB Corsair Non-ECC DDR400 RAM | OMV3: 1x100GB IDE | Data: 2x 250GB WD 7200rpm, 2x 3TB WD Red, 1x 4TB Samsung 5400rpm

  • If it is HDD speed through USB, then 153.62 MB/sec. it is not bad, little slow but i think it is normal
    I don't know which model sde is
    mine, 7200 rpm 3TB hdd was 190 mb/s


    what hdd and what interface(sata or usb) is used in your test?

    OMV3 on Proxmox
    Intel E3-1245 v5 | 32GB ECC RAM | 4x3TB RAID10 HDD
    omv-zfs | omv-nginx | omv-letsencrypt | omv-openvpn
    Click link for more details

    Edited once, last by luxflow ().

  • That's great.. thanks for the feedback!


    It is a Samsung D3 station external USB3 hard drive, 4TB, 7200rpm. 190 is great; I'm just happy with the knowledge that my configuration/hardware is operating correctly.


    I don't know what is inside the D3, but I think it is a Seagate drive. I will be opening it up later today in order to install it into the NAS

    NAS OMV 3.0.59 Rig: DFI Lanparty nForce4 SLI-DR | Opteron 165 Dual Core (no overclock) | 4GB Corsair Non-ECC DDR400 RAM | OMV3: 1x100GB IDE | Data: 2x 250GB WD 7200rpm, 2x 3TB WD Red, 1x 4TB Samsung 5400rpm

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