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:
2006-01-06
Regardless of the document's use (or misuse) of the term "hard realtime", it's a well understood fact that hard realtime means guaranteed deadlines; unless the Linux kernel provides microsecond accuracy, it's "soft realtime". This isn't a fuzzy definition -- or a minor distinction -- hard realtime guarantees are required particularly for systems where subtle variations in performance or latency can have tragic consequences (eg. flight control systems, etc).