Messages in this thread | | | Date | Mon, 01 Aug 2005 16:28:04 -0700 | From | George Anzinger <> | Subject | Re: Clock resolution / RT preemption |
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greg wrote: > Hi folks, > > I'm looking for a timer resolution lower than 1 ms (and monotonic clock > rate) destined to be used with some network code running on x86 > platforms. Would you please provide me with informations about how to > get/implement this. > > AFAIK, there's a "high resultion timer" patch hanging around, but > there's not much informations with regard to portability (specific > hardware requirements ?), scalability, integration with RT patches. > I understand the POSIX 1003.1b Clocks and Timers system calls are not > fully available within the linux kernel (and libc ?), am I right on that ?
On the HRT web site (see signature) there is a CVS repository. In there is a special version for the RT kernel. As to porting it to other archs, have a look at the include/linux/hrtimer.h file. It has (or should have) all you need to know. Please pass back any port you do. > > One more question : I believe Ingo's preemption patch run > timers/interrupt handlers within kernel threads, how should I assign > specific priority to address my goals without compromising system > stability ?
Carefully :)
-- George Anzinger george@mvista.com HRT (High-res-timers): http://sourceforge.net/projects/high-res-timers/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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