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USB memory stick ...... why does it have a sawtooth pattern when copying files?

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  • 15-02-2020 7:47pm
    #1
    NIMAN
    Registered Users Posts: 33,619 ✭✭✭✭


    When I transfer data on to a pen drive, it will show the transfer speeds like a sawtooth, at times it appears to be doing nothing.

    Is this just a quality issue with a cheap drive?


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    #2
    Johnboy1951
    Registered Users Posts: 14,011 ✭✭✭✭Johnboy1951


    copy to ram, write from ram to drive ....... different speeds ?


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    #3
    NIMAN
    Registered Users Posts: 33,619 ✭✭✭✭NIMAN


    Johnboy1951 wrote: »
    copy to ram, write from ram to drive ....... different speeds ?

    Maybe, but for periods it goes to zero and stops writing anything to the usb drive.


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    #4
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 91,658 Mod ✭✭✭✭Capt'n Midnight


    estimation.png

    Buffering.

    for SSD and hard drives the size of cache

    Files of different sizes

    Background tasks

    Antivirus scanner

    phase of the moon


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    #5
    degsie
    Registered Users Posts: 8,747 ✭✭✭degsie


    Switch to Linux. You are welcome.


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    #6
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 91,658 Mod ✭✭✭✭Capt'n Midnight


    degsie wrote: »
    Switch to Linux. You are welcome.
    One of the differences between Windows and Linux is that the latter defrags files when it writes then to the drive. So slightly slower copying individual files, but the drive is less fragmented so it's faster.

    Swings and roundabouts unless you are using an SSD

    [RANT]wifi on Linux connects so much faster [/RANT]


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