Some old stuff I found in the office
Patent 5,995,745
Adding real-time support to general purpose operating systems AbstractA general purpose computer operating system is run using a real time operating system. A real time operating system is provided for running real time tasks. A general purpose operating system is
RTLinux early paper from 20 years ago
An early RTLinux paper with Michael Barabanov. real_time_1996 Only 20 years later, the idea is now not too scary. Real-Time Linux Michael Barabanov Victor Yodaiken March 3, 1996 1 Introduction If you wanted to control a camera or a
Real-time Linux
My opinion has always been that the Linux-RT project was based on an unfixable engineering error. A few words on the status and the future of RT: ———————————————– The situation since last years RTLWS (https://lwn.net/Articles/572740/) has not improved at
memories
For some reason, all copies of an early variant of RTLinux called “myrtlinux” by its Italian “author” have disappeared from the web, but thanks to some archives we can find some fragments from old days. For example, within a year
More petty
The ALMA team has released ACS 8.0 on Red Hat 4.4, downgrading the Linux version from the foreseen 5.2 version. This choice, with the consequent back-porting of the code to the older OS version, had to be taken because of
Soft real-time and QOS (revised)
[ revised version of an older post] “Soft real-time” is a perfect example of the “soft design” noted in an earlier post. There are perfectly good ways of characterizing quality of service (QOS) assurances precisely. Doug Jenson proposes one possible
OSIM Madrid and Value Manifolds
Spent a couple of very interesting days at the OSIM conference in Madrid as part of my consulting for WindRiver which has a very powerful market position in cellular handsets now – partly due to their acquisition of RTLinux for
Security notes
David Elliot Bell has an interesting essay on the US government and software security – little “inside baseball”, but informative. He cites my critique of MILS. One of Bell’s points, which is briefly mentioned in my note, is that composition
Plagiarism watch
Thanks to google code watch I see that an open source real-time Linux project has reached new heights of originality – changing the magic number that they copied from RTLinux 10 years ago to a new number. The constant definition