Linked by David Adams on Fri 18th Apr 2008 17:34 UTC, submitted by Rahul
Linux 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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I was under the impression that hard real-time meant just guaranteed deadlines with no drop in service quality, nothing to with whether it guaranteed one or several microseconds.

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Rahul Member since:

You are correct. Hard real time does not mean fast. Merely a guarantee to do a particular transaction within a particular time slice. In fact, enabling hard real time can make your general performance go down in preference to less spikes.

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