Windows 10: Robocopy speed question

Discus and support Robocopy speed question in Windows 10 Installation and Upgrade to solve the problem; I have 2 large files total 210 GB being copied by Robocopy between 2 external drives. Task Manager under "Disk" indicates a transfer speed of 30... Discussion in 'Windows 10 Installation and Upgrade' started by IvanDenisovich, Sep 11, 2020.

  1. Robocopy speed question


    I have 2 large files total 210 GB being copied by Robocopy between 2 external drives. Task Manager under "Disk" indicates a transfer speed of 30 MB/s.


    A straightforward calculation indicates that it should take 117 minutes to complete the transfer. In practice, however, I am noticing a time to completion of about 250 minutes, or more than double the theoretical calculation.


    Can anyone please explain this large discrepancy or, alternatively, suggest some way to improve on this performance? With Robocopy I use switches /mir /xo /mt:80.


    All suggestions appreciated.

    :)
     
    IvanDenisovich, Sep 11, 2020
    #1
  2. Sasqui Win User

    Overclocking / Undervolting guide for Vega 56 or 64?

    Here's a quick laundry list:

    List of software to use for overclocking and testing
    Examples:
    Wattman (and how to find and use it, like an overview, including profiles)
    Unigine Valley or Heaven (use this for quick testing while changing settings in Wattman and checking for stability / artifacts) ...just suggesting this
    How to monitor cores / mem speeds and temps during testing (I've seen screen overlays, and others using GPUz)

    Step-by step overclocking in Wattman
    Fan speeds
    Power limit
    Temp limit
    Voltages
    Core speeds
    Memory speeds
     
    Sasqui, Sep 11, 2020
    #2
  3. Windows 10 file transfer

    You write "the file transfer speed drops to zero", yet the xcopy command does not provide you with any feedback about speed or progress. I suggest you do this to drill down a bit further:

    • Examine the event logger (as mentioned before)
    • Use robocopy instead of xcopy:

      robocopy F:\ D:\ /s
    • Repeat the copy process on a different machine
     
    Frederik Long, Sep 11, 2020
    #3
  4. cShane Win User

    Robocopy speed question

    Robocopy multi-threaded copies

    Thanks. I
    posted
    a question there.

    Shane.
     
    cShane, Sep 11, 2020
    #4
Thema:

Robocopy speed question

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