Exactly. 1. Take a zPDT, connect to their internal LAN, Install z/VM, 2. Take their software image and recompile for z System, 3. Create an read only image that can be booted multiple times in z/VM. 4. Duplicate a small portion of their network traffic to process on their servers and zVM images, and compare results. 5. Compare google server usage and zVM usage. 6. Ramp up the amount of diversion to max one processor and see how well it handles delays. 7. Install Linux One and install zVM and their image. Max out a processor setting then increase. Max out one drawer, then two if equipped.
On Sat, Oct 25, 2025 at 10:54 AM Jon Perryman <[email protected]> wrote: > On Fri, 24 Oct 2025 16:23:05 +0000, Dick Williams < > [email protected]> wrote: > > >Why would IBM want to sell a mainframe (zOS) to Google? > >Do they process important transactions? > > This mindset has doomed z/OS. These are the wrong questions. IBM > (International Business Machines) wants to sell to all businesses. > > Not all businesses are about important transactions. Instead, ask why > isn't Google replacing their 5M Linux servers with 250,000 z/OS servers? > What business problems does IBM solve that are important to Google? > > A single Google search moves hundreds of strings. The z MVST (move string) > is a single instruction residing in cache. On the other hand, the STRCPY() > function for other architectures is several instructions that reside in > storage and must be moved to cache as needed. > > A Google search is heavy disk access. MVS has been running as a NAS since > the 1960s. > > Google developed GO 15 years ago but missed important and simple features > (e.g. recently discussed PRINTF compile time type validation). > > You get what you pay for and Google pays $0 for Linux, GCC and others. > > Linux is looking to eliminate big endian support despite it being of > little impact to Linux. Most endianess is handled by hardware instructions > and is very little impact to programs. > https://www.phoronix.com/news/Torvalds-No-RISC-V-BE > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN > -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
