News for hackers. Stuff that matters.

A comment on The RustyHermit Unikernel. Parent comment

Re:The RustyHermit Unikernel by monocasa on Sunday January 24, 2021 @08:23PM (#25898004)
Most RTOSes.

z/TPF is also a unikernel so Visa when processing every transaction.

[ Parent | on HN ]
Re:The RustyHermit Unikernel by felipehuici on Monday January 25, 2021 @08:05AM (#25902662)
Interesting, do you have any references explaining how/why z/TPF is a unikernel? Thanks!
[ Parent | on HN ]
Re:The RustyHermit Unikernel by monocasa on Monday January 25, 2021 @08:40PM (#25911385)
It's from an era before ubiquitous MMUs, even in IBM mainframes. It therefore was structured as a library OS, with even less separation between it and the application code than even MSDOS and it's applications.

Transaction Processing Facility: A Guide for Application Programmers by R. Jason Martin is a decent book I'd recommend on the subject.

[ Parent | on HN ]
Re:The RustyHermit Unikernel by nderjung on Monday January 25, 2021 @04:47AM (#25901344)
Did not realise Visa was using z/TPF. Do you have a link with more information?
[ Parent | on HN ]
Re:The RustyHermit Unikernel by monocasa on Monday January 25, 2021 @08:34PM (#25911336)
I don't know of much public information other than their job postings.
[ Parent | on HN ]