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On Sat, Jul 26, 2008 at 10:17 AM, Jerry Feldman <[hidden email]> wrote: > On Sat, 26 Jul 2008 08:51:40 -0400 > Kent Borg <[hidden email]> wrote: > > > Jerry Feldman wrote: > > > I think the future of computing will be leaning very heavily on > > > virtualization. > > > > And isn't that strange. Isn't this an indication of major failure in > > operating system design? > > > > I remember when computers were sometimes nearly naked hardware. The > > idea of having a real OS sounded so good, it would let multiple programs > > run and isolate them from each other. Time passes, and I am a Linux > > user. I know a fair amount about it, and it can run tons of different > > programs at once...yet I run Linux guests on top of Linux hosts. And > > others do that too. > > Back in the 1970s, I ran an IBM data center with VM370 and OS/VS1 as > the guest production OS. On an unintentional benchmark, we had to rerun > payroll. The first night we ran it with OS/VS1 as the native OS, and > the second night ran it under VM370 with online CMS users. (CMS was a > single user OS used by our developers). We got better throughput on > OS/VS1 under VM370 than native. I am also aware of a few other > companies who achieved much better throughput using DOS (IBM's > mainframe DOS). But, both of these cases were a result of bottlenecks > in the OS that were alleviated by VM. > > The reason I think that virtualization will be the way to go in the > data center is flexibility. Hardware is constantly evolving to become > faster, more memory, and smaller. While there will always be some > legacy systems, the ability of the vurtualization systems to > reconfigure dynamically over multiple machines gives the data center > people the capability to remove the physical boundaries, and also the > ability to bring new hardware into the mix without shutting down. I > think that one of the talks planned for the event will be on this > feature. > > -- > -- > Jerry Feldman <[hidden email]> > Boston Linux and Unix > PGP key id: 537C5846 > PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB CA3B 4607 4319 537C 5846 > > _______________________________________________ > >
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