Messages in this thread | | | Subject | Re: [CPUISOL] CPU isolation extensions | From | Daniel Walker <> | Date | Mon, 28 Jan 2008 15:41:45 -0800 |
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On Mon, 2008-01-28 at 10:32 -0800, Max Krasnyanskiy wrote: > Just this patches. RT patches cannot achieve what I needed. Even RTAI/Xenomai can't do that. > For example I have separate tasks with hard deadlines that must be enforced in 50usec kind > of range and basically no idle time whatsoever. Just to give more background it's a wireless > basestation with SW MAC/Scheduler. Another requirement is for the SW to know precise timing > because SW. For example there is no way we can do predictable 1-2 usec sleeps. > So I wrote a user-space engine that does all this, it requires full control of the CPU ie minimal > overhead from the kernel, just IPIs for memory management and that's basically it. When my legal > department lets me I'll do a presentation on this stuff at Linux RT conference or something.
What kind of hardware are you doing this on? Also I should note there is HRT (High resolution timers) which provided microsecond level granularity ..
Daniel
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