VirtualBox

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Ticket Resolution Summary Owner Reporter
#9761 fixed Linux installation fails Suneet Kamath
Description

tried installing several different version of ubuntu (10.04, minimal, 11.10, 386 and amd64) in virtualbox but it fails at the select and install software stage of the linux installer. Perhaps it has something Lion 10.7.2 update

#5563 duplicate Booting guest CentOS 5.3 x86_64 kernel reboots host Steve Fink
Description

I have a 32-bit CentOS 5.3-ish host machine (started as CentOS 5.1, and upgraded from there) in which I installed 64-bit CentOS 5.3 as a guest, using a slightly customized kernel. It works fine.

In order to help someone track down a bug in SystemTap, I exported the VM and imported it into a 32-bit Fedora 10 host OS. When I start up the VM, it runs grub, then soon after the guest kernel starts booting, it reboots the host OS.

I compared the .VirtualBox/Machine/CentOS5.3-x86_64/CentOS5.3-x86_64.xml files between the original VM and the exported-then-imported VM and noticed a number of differences, so I tried using the original XML file with just the machine and disk uuids changed. This time, it froze my host instead of rebooting it. Which at least allowed me to see how far it made it. The last line was of the guest kernel printing out the "initrd..." line followed by a blank line.

My host kernel is:

Linux foxglove.localdomain 2.6.27.38-170.2.113.fc10.i686 #1 SMP Wed Nov 4 17:55:39 EST 2009 i686 i686 i386 GNU/Linux

#7494 obsolete Very slow configure run on 64-bit Windows 7 Steve Fink
Description

I am using VirtualBox to host a 64-bit Windows 7 build box for compiling Firefox, and the configure step is mind-numbingly slow.

Host: Fedora 13 x86_64 with 12GB RAM, 8 cores (+ 8 hyperthreaded), 2.27GHz Guest: Windows 7 64-bit

I'm testing by running ./config.status at the toplevel (using the MozillaBuild msys build environment). I aborted after several hours, and switched to timing running js/src/config.status, which works on a much smaller subset of the tree.

On hardware, this took a few seconds to run. On my VM, it took 19.9seconds when giving the guest 4GB of RAM and 4 CPUs. The build directory was shared via guest additions with the host.

If I dropped the memory to 1GB RAM, it slowed down to 21sec. Dropping to 1 CPU sped it up. Switching to a Samba share sped it up. The fastest run I could get was 11.3sec.

In the fastest configuration, I tried the toplevel config.status again. It took 13.5 minutes; much faster but still far slower than hardware.

I have disabled Windows Defender, all the virus checkers I could find, and lots of stuff carried over from when it was a physical machine.

The guest CPU or CPUs are all pretty much maxed out during this test. When running with 4 guest CPUs, the real CPUs show about 25% utilization for half the CPUs, <2% for the other half. Neither the host nor the guest show significant disk or network I/O.

This configure test starts up many, many processes through the msys shell.

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