Linked by David Adams on Fri 18th Apr 2008 17:34 UTC, submitted by Rahul
Lennart Poettering of Red Hat, PulseAudio maintainer has blogged in detail about the impact of Real-Time Group scheduling in 2.6.25 kernel. The Real time patches come from -rt patchset maintained by Ingo Molnar of Red Hat which aims to make Linux the first general purpose operating system with hard real time features. 
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Member since:
2005-07-06
Some of the documents I refer specifically use the word hard real time. As an example
https://wiki.ubuntu.com/RealTime/Feisty
Red Hat MRG product has specific guarantees below certain milli seconds for specific transactions. Refer to their whitepapers for more details.
I guess your definition of hard real time is different then which is ok as long as you clearly specify what your definition is or provide some reference as to to what you believe is a commonly acceptable definition.
Within specific industries, they start out with a definition or avoid the term and just specific the guarantees just to avoid this problem. That for example guarantees the max time slice among other things.
Edited 2008-04-19 00:29 UTC