IBM mainframe beats other platforms for cost and performance

Re:IBM mainframe beats other platforms for cost and performance by nix23 on Wednesday September 08, 2021 @03:11PM (#28461706)

LAPR is not a OS-level virtualization, you can install Linux on a LPAR (however you do it normally with z/vm), it's more like a Hard, Hardware divider.

https://en.wikipedia.org/wiki/Logical_partition

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Re:IBM mainframe beats other platforms for cost and performance by oneplane on Wednesday September 08, 2021 @04:53PM (#28462923)

Essentially it's a microcode hypervisor. You can indeed install Linux on an LPAR, but it will be a useless linux unless you intend to use it for classic 'bog box' installations. (with big box referring to the cardboard boxes that come with installation floppies/CD/DVD media type of software 'distribution')

While an LPAR could technically be HVM, the nature of the changes required to an OS make it PV-like.

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Re:IBM mainframe beats other platforms for cost and performance by nix23 on Wednesday September 08, 2021 @05:56PM (#28463536)

I just wanted to say that it's NOT like jails and it's not OS-Virtualization.

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Re:IBM mainframe beats other platforms for cost and performance by oneplane on Wednesday September 08, 2021 @08:07PM (#28464594)

If someone wanted to make a comparison, it's like additional 'rings' the x86 ring security model, but instead of nested rings it's parallel rings. You might as well have a single OS with containers.

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