On Monday 03 March 2008, Bosko Radivojevic wrote: > I had CONFIG_ATMEL_TCLIB enabled, but not TCB_CLKSRC and > TCB_CLKSRC_BLOCK=0. With all those options, I finally have HRT > functionality. But, strange thing is that jitter of my little example > (get time, sleep 1ms, get time, show the difference) is around 250us. > Maybe this is normal for this architecture? I have no idea why that would be. Maybe you can find out. :) > System is (as noted on rt.wik site) very slow with NO_HZ option enabled. It doesn't exactly say *why* or compare to other arm926ejs chips ... Could the 64-bit math (ktime stuff) be a factor there? Your board probably only runs at 95 (or-so) bogomips after all. And is that just a NO_HZ issue, or generically an issue when oneshot timer modes are in heavy use? - Dave -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
