On Mon, Aug 10, 2015 at 04:16:58PM +0200, Frederic Weisbecker wrote: > I considered many times relying on hrtick btw but everyone seem to say it has > a lot > of overhead, especially due to clock reprogramming on schedule() calls.
Yeah, I have some vague ideas of how to take out much of that overhead (tglx will launch frozen sharks at me I suspect), but we cannot get around the overhead of actually having to program the hardware and that is still a significant amount on many machines. Supposedly machines with TSC deadline are better, but I've not tried to benchmark that. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
