Macos Guest VM RAM usage

Discussion in 'Parallels Desktop on a Mac with Apple silicon' started by slickw, Oct 14, 2024.

  1. slickw

    slickw Bit poster

    Messages:
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    App version: 20.1.0
    Computer: MacBook M1 Pro A2442 - 32GB RAM
    Guest VM OS: Sequoia 15.0.1
    Host OS: Sequoia 15.0.0
    RAM assigned to Guest VM:
    [​IMG]

    Anybody know why I am seeing such high numbers in the activity monitor for the MacOS guest vm. I see 2 processes for the same. One is 8.24 GB which is around how much I assigned to this VM and one with an Apple Icon that just keeps on growing. At one point I saw the number to be 229.5 GB usage. Is that a bug?

    [​IMG]
     
  2. ScottJ4

    ScottJ4 Bit poster

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    I see this problem too. A newly created macOS VM (never logged into after creation), left at the login prompt asks for nearly half of a gigabyte per minute, or 28 Gigs per hour. It is twice as bad if you start up a second macOS VM. Eventually the host macOS starts compressing memory and swapping out to disk and things get very slow.
     
  3. ScottJ4

    ScottJ4 Bit poster

    Messages:
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    Some screenshots of memory usage of new macOS VMs never logged in, waiting at login prompt. (M2 Max MBPro 64GB RAM), Parallels v20.1.0 (55732) running on macOS 15.0.1, new VMs created as macOS 15.0.1
     

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  4. ScottJ4

    ScottJ4 Bit poster

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    One more objservation. The macOS VM must be shut down, not restarted, in order to release all of the memory.
     
  5. slickw

    slickw Bit poster

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    Do we need to pay some where for Parallels team to respond on the issue?

    Also I am not too sure if this is a parallels issue or the way host macOS is displaying the ram usage. I checked in ccleaner and that doesn't show the high numbers.

    upload_2024-10-17_14-48-52.png
     
  6. ScottJ4

    ScottJ4 Bit poster

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    This is a Parallels issue. UTM does not leak memory for macOS VMs on Apple Silicon like Parallels 20 does.
     
  7. AndreS31

    AndreS31 Bit poster

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    Yes. I have the same issue. Yesterday i reached 900GB... It was not pretty.
     
  8. slickw

    slickw Bit poster

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    anybody knows how to report this issue to Parallels? Is it free to create a case for them to review?
     
  9. ScottJ4

    ScottJ4 Bit poster

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    I can confirm this issue appears to be fixed in Parallels 20.1.1 (55740). Thank you Parallels!
     
  10. AndreS31

    AndreS31 Bit poster

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    I created a support ticket with support bundle information for that issue.
     
  11. AndreS31

    AndreS31 Bit poster

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    upload_2024-10-25_8-55-47.png
    That was fast :)
    And yes it indeed fixed the issue. Thank you Parralles Team!
     
  12. ParallelsU1374

    ParallelsU1374 F. K. Bit poster

    Messages:
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    I concur - this is fixed in 20.1.1 - a huge difference; thank you Parallels!
     

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