> -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:ibm-m...@bama.ua.edu] On Behalf Of Mark Post > Sent: Monday, July 06, 2009 11:56 AM > To: IBM-MAIN@bama.ua.edu > Subject: Re: Computerworld: London Stock Exchange to Abandon Windows > > >>> On 7/6/2009 at 12:36 PM, Mikhail Ramendik <m...@ramendik.ru> wrote: > > 2009/7/6 McKown, John <jmck...@healthmarkets.com> > > > >> > >> Proportedly, Windows can run on z. z/VOS (CMS based) from > Mantissa is said > >> to allow MS Windows (unmodified) to run under z/VM. It is > some sort of "jit" > >> type intepreter / compiler for x86. > > -snip- > > I wonder how that would benchmark against running Windows > under zLinux, > > using bochs or qemu. All of that open source and on an IFL > when available. > > Most likely, considerably better. Windows on bochs on Linux > on a mainframe has been done in the past. Verrry painfully slow. > > > Mark Post
Also, Bochs is a pure emulator. z/VOS is supposed to act a bit like Java's JIT compiler and recompile x86 into zArch instructions. Eventually, if run long enough, most of the Windows kernel would be "native" code. Reminds me a bit of what PSI's zArch emulator was supposed to do. I wonder if Intel or AMD could put a stop to it in a similar manner? -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * (817)-961-6183 cell john.mck...@healthmarkets.com * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
