http://ubuntuforums.org/showthread.php?t=690330add "nohz=off" to the end of your "kernel" line in "/boot/grub/menu.lst" Like this:
Code: Select all
kernel /vmlinuz-2.6.20-16-generic root=UUID=db6c0561-048a-4f13-af4a-4aeec22cc819 ro quiet splash nohz=off
Ubuntu 10.10 guest freezes randomly
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Re: Ubuntu 10.10 guest freezes randomly
This worked for me:
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Re: Ubuntu 10.10 guest freezes randomly
So, to refresh, here's my current guest:
Guest and settings - Ubuntu 10.10 Server 64-bit, 1 CPU, AMD-V on, Nested Paging off, ACPI off, 512 MB RAM, 32 MB video, 64 GB HD
My previous update was that it ran for about a day. Well, I decided to try again with the same settings, but after I completely closed down and restarted the VirtualBox main program (which controls all of the VMs) as well. After doing that, my Ubuntu guest has been running without crash ever since May 29. So, the simple restart of the VirtualBox software appears to have helped. If it does crash again, I will try the "nohz=off" kernel boot option.
Guest and settings - Ubuntu 10.10 Server 64-bit, 1 CPU, AMD-V on, Nested Paging off, ACPI off, 512 MB RAM, 32 MB video, 64 GB HD
My previous update was that it ran for about a day. Well, I decided to try again with the same settings, but after I completely closed down and restarted the VirtualBox main program (which controls all of the VMs) as well. After doing that, my Ubuntu guest has been running without crash ever since May 29. So, the simple restart of the VirtualBox software appears to have helped. If it does crash again, I will try the "nohz=off" kernel boot option.
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Re: Ubuntu 10.10 guest freezes randomly
Still going. Have not had to use the "nohz=off" option yet.
Re: Ubuntu 10.10 guest freezes randomly
I see the occasional ticket for this issue and it is most certainly NOT fixed.
Host: hp xw8600 running windows 7, service pack 1 plus corporate fixes
Guest where behavior is exhibited: ubuntu 12.04, ubuntu 14.04
If IO-APIC is enabled with more than one cpu, the system becomes unstable.
It typically takes 3 boot attempts before the login dialog is displayed.
Another 2-3 attempts before keyboard is permitted to enter login credentials. (otherwise, mouse can move cursor, but no keystrokes are accepted)
Another 2-3 attempts before desktop is properly drawn. Often it lacks the menu bar, or lacks desktop icons (just the background).
At this point the system is useable other than frequent "system error has occurred" messages.
Ubuntu 14 is worse than ubuntu 12.
In any case, virtualbox is not usable with more than 1 cpu.
Host: hp xw8600 running windows 7, service pack 1 plus corporate fixes
Guest where behavior is exhibited: ubuntu 12.04, ubuntu 14.04
If IO-APIC is enabled with more than one cpu, the system becomes unstable.
It typically takes 3 boot attempts before the login dialog is displayed.
Another 2-3 attempts before keyboard is permitted to enter login credentials. (otherwise, mouse can move cursor, but no keystrokes are accepted)
Another 2-3 attempts before desktop is properly drawn. Often it lacks the menu bar, or lacks desktop icons (just the background).
At this point the system is useable other than frequent "system error has occurred" messages.
Ubuntu 14 is worse than ubuntu 12.
In any case, virtualbox is not usable with more than 1 cpu.
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Re: Ubuntu 10.10 guest freezes randomly
I beg to differ. I have it installed on six different computers consisting of three different hosts - Linux, OSX and Windows.adamf663b wrote:In any case, virtualbox is not usable with more than 1 cpu.
Attach the VBox.log (zipped) to a post.
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Re: Ubuntu 10.10 guest freezes randomly
I made too general a statement. How about this: "on my desktop, an hp xw8600 running windows 7", virtualbox is usable with multiple cpus.
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Re: Ubuntu 10.10 guest freezes randomly
still need the VBox.log.
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Re: Ubuntu 10.10 guest freezes randomly
Bootup hang on first attempt with 4 cpus. Log attached.
- Attachments
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- ubuntu14-2015-10-06-13-23-21.log
- (68.05 KiB) Downloaded 17 times
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Re: Ubuntu 10.10 guest freezes randomly
Since your CPU only has 4 cores and no hyperthreading that's not surprising.
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Re: Ubuntu 10.10 guest freezes randomly
It has 4 cores and hyperthreading. It shows as 8 cpus in windows and I can connect all 8 to virtualbox.
I get lockups with any multiple number of cpus. The number 4 is irrelevant. It'll lockup on 2 or 8.
You're wasting my time. I don't think I've seen in any documentation or release notes an indication that one should or shouldn't use exactly 4 cpus if one has a 4core system without hyperthreading.
The issue is the lockup.
I get lockups with any multiple number of cpus. The number 4 is irrelevant. It'll lockup on 2 or 8.
You're wasting my time. I don't think I've seen in any documentation or release notes an indication that one should or shouldn't use exactly 4 cpus if one has a 4core system without hyperthreading.
The issue is the lockup.
Last edited by adamf663b on 6. Oct 2015, 21:32, edited 1 time in total.
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Re: Ubuntu 10.10 guest freezes randomly
00:00:01.987079 Host RAM: 16383MB total, 8397MB available
You are over-committing memory. The guest should be using no more than 4GB.00:00:02.314441 RamSize <integer> = 0x0000000200000000 (8 589 934 592, 8 GB)
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Re: Ubuntu 10.10 guest freezes randomly
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Re: Ubuntu 10.10 guest freezes randomly
Interesting. I would not have thought 4G from a 16G system would be considered "overcommitting."
It seems happier w/ 2G.
thanks;.
It seems happier w/ 2G.
thanks;.
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Re: Ubuntu 10.10 guest freezes randomly
NP. sorry I wasted your time.
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Re: Ubuntu 10.10 guest freezes randomly
btw, I did make one error. Your PC has two 4 core non-hyperthreading CPUs. As far as over-commiting memory, you had it set to 8GB not 4GB.
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