Linux guest VM starting verry slow on Linux Host

Discussions about using Linux guests in VirtualBox.
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Lisa Miller
Posts: 17
Joined: 11. Mar 2020, 02:30

Linux guest VM starting verry slow on Linux Host

Post by Lisa Miller »

Linux guest VM starting verry slow on Linux Host:

BIOS/Hardware:
* 2 Kern Intel CPU, 2 kerns activated on BIOS
* VT activated on BIOS
* 8 GB RAM
* SSD Harddisk, some GB free space available

Host:
* Linux MInt 64

Guest OS:
* Linux MInt 64
* 4 GB RAM

Error/Symtome:
* the guest OS need some minutes for booting up to login window
* after login on Linux Mint guest system, i get a error message like "check your display driver, the driver dont support 3d speedup"

Any idea ?
Last edited by Lisa Miller on 26. May 2021, 17:55, edited 1 time in total.
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Linux guest VM starting verry slow on Linux Host

Post by scottgus1 »

Start the VM from full power off, not save-state. Run until you see the problem happen, then shut down the VM from within the VM OS if possible. If not possible, close the Virtualbox window for the VM with the Power Off option set.

Please right-click the VM in the main Virtualbox window's VM list, choose Show Log. Save the far left tab's log, zip the log file, and post the zip file, using the forum's Upload Attachment tab.
Lisa Miller
Posts: 17
Joined: 11. Mar 2020, 02:30

Re: Linux guest VM starting verry slow on Linux Host

Post by Lisa Miller »

Now attached my loggfile:
Attachments
LM20-Guest-2021-05-26-18-07-51.log.zip
(29.72 KiB) Downloaded 14 times
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Linux guest VM starting verry slow on Linux Host

Post by scottgus1 »

Host CPU status:
00:00:02.415704 CPUM: Logical host processors: 2 present, 2 max, 2 online, online mask: 0000000000000003
00:00:02.415767 CPUM: Physical host cores: 2
00:00:02.416109 Full Name: "Intel(R) Core(TM)2 Duo CPU P9300 @ 2.26GHz"
00:00:02.241655 EnableNestedPaging <integer> = 0x0000000000000000 (0)
Guest CPU settings:
00:00:02.241115 NumCPUs <integer> = 0x0000000000000002 (2)
Your host PC is too old. :)

It's a Core 2 Duo, and it is probably barely handling the host OS, let alone a second OS. It's also missing Nested Paging, which helps a VM to run a lot better. If this cannot be enabled in the computer's BIOS, then you probably have the best you can get on this computer.

Time for a new PC!
Lisa Miller
Posts: 17
Joined: 11. Mar 2020, 02:30

Re: Linux guest VM starting verry slow on Linux Host

Post by Lisa Miller »

The host OS Linux MInt 64, are working fine on Core2 Duo since years. The Linux Mint 64 was working about up to 6 month ago fine as guest too.

Now one thing changed.

What are the NestedPaging are related ? Its related to RAM, VGA or to some other ?

And does the "NestedPaging" activated additional to the BIOS on one other configuration step too ?
scottgus1
Site Moderator
Posts: 20965
Joined: 30. Dec 2009, 20:14
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Windows, Linux

Re: Linux guest VM starting verry slow on Linux Host

Post by scottgus1 »

Lisa Miller wrote:The Linux Mint 64 was working about up to 6 month ago fine as guest too.
That's the sort of thing that should have been in the first post. It shows the "old" diagnosis to not really be the problem.

Nested Paging relates to RAM, I think. However, since this VM has apparently been working beforehand on this host, so it may not be the problem either.

The VM environment does not show operating problems, just slowness. The problem could be a new update on the host, if updates have ben run. Or a problem within the OS itself, if the host OS and Virtualbox version have not been updated since the VM was working.

A Linux guru will have to look into this to see if I missed something in the log.
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