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  1. FreeNAS / TrueNAS
  2. NAS-107044

rsync in TrueNAS 12.0 Beta appears to be throttled.

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    Details

    • Type: Bug
    • Status: Engineering Closed (View Workflow)
    • Priority: Low
    • Resolution: Cannot Reproduce
    • Affects Version/s: 12.0-BETA1
    • Fix Version/s: N/A
    • Component/s: Services
    • Labels:
      None
    • Impact:
      Low

      Description

      In attempting a one-off migratione of data from my existing homebrew NAS to TrueNAS, I popped open an SSH console and started a pull.    Command was..

       rsync  -arvh --info=progress2 -e ssh --no-perms user@10.2.2.5:/public/. /mnt/tank/Storage/

       

      After it ran a few minutes, I noticed that the speed was right around 18MB/s despite having a 10Gbe connection.

      On a whim, I opened up multiple SSH windows, and set rsync to running in multiple subdirectories.    They each stopped around 18MB/s.

      I tried it with --bwlimit=500000, and it changed nothing.

      Originally it was using compression as well, but since the spinning rust is the bottleneck, I took that off, no change.

       

      I tried from a VM on an ESXi box, which was only a 1Gbe connection to the source server, and it immediately started pulling around 100MB/s, while TrueNAS rsync was pulling the 18MB/s many times over in other windows.

      TrueNAS and the VM are both running rsync 3.1.3, the source server is running 3.1.2

       

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                Assignee:
                releng Release Council
                Reporter:
                RP Ryan Pomaski
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                  Dates

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                  Updated:
                  Resolved: