QEMU vs. VirtualBox
I thought I’d take this relatively quiet period to do a quickie comparison between a couple of virtualization tools: QEMU and Oracle's VirtualBox. For the comparison I chose to install virtual guest instances of Ubuntu 10.10 desktop from a downloaded copy of the iso. The host system is an AMD 64-bit machine that is also running Ubuntu 10.10 desktop. Here’s the kernel version of the host at the time of this writing: 2.6.35-24-generic #42-Ubuntu SMP Thu Dec 2 02:41:37 UTC 2010 x86_64 GNU/Linux. I used VirtualBox 4.0 for this comparison.
Both products provide a graphical interface for building a new virtual guest instance. Here are what a few of the QEMU build sequence steps look like: