The Secret History of Star Wars[->] 2008-05-21 00:05 lennier
http://www.secrethistoryofstarwars.com/
Recently, it seems that the pace of discovery is accelerating, especially that which is related to the neat new systems and programs available to computer users.
I had been reading about Xen for a'while, but a port for the system wasn't working it's way into the FreeBSD tree very quickly. Finally, I booted a copy of NetBSD 3.0.2, and (since Xen packages are available for NetBSD) loaded the requisite pieces and parts to give Xen a try.
As I have been apt to say frequently lately, it's simply "A m a z i n g"!
Xen can be used to run an internet vps host provider, (virtual private server), and I have begun to see a few hosting companies who are touting it as the virtualization system that they use. You don't get completely virtualized resource management out of it, but for straightforward virtualization projects, it's great.
A good use for it is found when running multiple instance databases. While SMP has been around for awhile, taking full advantage of it hasn't. With Xen, for each database that I wish to use, I can launch a new kernel and associated process using whichever processor I select on my multi-processor machine. This seriously trumps an option that uses some OS system's load balancing capability. Here is a link to my desktop snapshot with two instances running:
Link to my Xen/NetBSD desktop snapshot
The big iron operators might rightfully say that this sort of virtualization scenario is relatively old hat for them. While this is true, the current rage is consuming, for the first time on this scale, computer operators who use PC-borne operating systems. For instance, while Unix might be considered to be big-iron borne, most current derivatives (e.g. BSDs, Linux) are really PC-borne, and it is the crowd that uses these operating systems that has become excited about the possibilities of virtualization.
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