On Fri, 08 Jan 2010 14:12:39 EST ge...@plan9.bell-labs.com wrote: > I don't have enough experience with VirtualBox to make a sensible > comparison.
Plan9 on virtualBox is unusably slow. > The thing that none of the VM monitors seem to offer (though I'd love > to be proven wrong) is debugging tools for the guest operating > systems. This is odd, as it was one of the major uses of VM/370. So > if a guest kernel goes off into space, the VM monitor shuts down the > virtual machine or resets it, but provides no means to find out what > happened, though it's in a perfect position to easily do so. I have used qemu + host gdb to debug a guest FreeBSD kernel. FreeBSD does have remote gdb support.