Really bad disk performance in shared folders (/media/psf)

Discussion in 'Linux Guest OS Discussion' started by taenzerme, Sep 29, 2021.

  1. taenzerme

    taenzerme Bit Poster

    Messages:
    2
    Hello all,

    I already tried to find a solution through the official support channels, but it appears people there don't understand what I'm talking about.

    I'm running several Debian Buster machines with Parallels tools installed. Host system folders are mounted at /media/psf, but disk write/read performance is abysmal in these:

    root@devhost:/media/psf/Home/tmp# dd if=/dev/zero of=test.bin bs=1024k count=1000
    1000+0 Datensätze ein
    1000+0 Datensätze aus
    1048576000 bytes (1,0 GB, 1000 MiB) copied, 10,8553 s, 96,6 MB/s
    Performance inside the VM disk is OK:

    root@devhost:~# dd if=/dev/zero of=test.bin bs=1024k count=1000
    1000+0 Datensätze ein
    1000+0 Datensätze aus
    1048576000 bytes (1,0 GB, 1000 MiB) copied, 0,886817 s, 1,2 GB/s
    I understand the folders beeing shared via network but disk performance never exceeds the 100 MB/s.

    Any ideas how to fix this?

    Kind regards
    Sebastian
     

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