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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
