On Wed, Aug 17, 2011 at 11:54 AM, Sankara Muthukrishnan <sankara.m@xxxxxxxxx> wrote: > The cyclic test results are not acceptable (attached the output of > cyclictest). I am seeing maximum latency of 757 us on core-0 and 1905 > us on core-1. Are you (Is anyone) seeing better results on latency > with SMP kernel with RT patch on ARM (OMAP4 processors)? I have seen > ~25 us of latency with single core kernel (though I have used a > different kernel configuration). > Never ever mind and sorry for the confusion. I did not realize that "Kernel debugging" was enabled in the config Frank had attached. With kernel debugging disabled, I see max latencies less than 20 us on both cores on panda board with cyclictest (cyclictest -l1000000 -m -Sp99 -i200 -h60 -q -n) in my quick run and it is exciting to see these numbers. Thanks Frank. The only other outstanding problem as of now is that the RT kernel hanging during boot on panda board (boots sometimes after several resets and/or power-cycles). -- 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
