Dear RT users, I've been trying to install the 4.4.32-rt43 kernel but am having trouble confirming it's working properly. For the config the only thing I changed was the Preemption Model to "Fully Preemptible Kernel (RT) (PREEMPT_RT_FULL)" while making sure high resolution timer support was on, the rest is from an earlier Ubuntu installation. It patched and compiled without any issues and was installed simply using make. To test it I used cyclictest from https://rt.wiki.kernel.org/index.php/Cyclictest to measure the maximum latency under 100% load (the load was generated using the pi calculator from the same bundle). However the latency not only didn't improve but the stress test also frequently exited due to deadlocks. The hardware is: Intel(R) Xeon(R) CPU E5-2420 0 @ 1.90GHz 64GB RAM And finally an example of pi_stress deadlocking: $ ./pi_stress --duration=240 --groups=24 Starting PI Stress Test Number of thread groups: 24 Duration of test run: 240 seconds Number of inversions per group: unlimited Admin thread SCHED_FIFO priority 4 24 groups of 3 threads will be created High thread SCHED_FIFO priority 3 Med thread SCHED_FIFO priority 2 Low thread SCHED_FIFO priority 1 Current Inversions: 842971 WATCHDOG triggered: group 13 is deadlocked! reporter stopping due to watchdog event Stopping test If anyone has any insight into what I could be doing wrong I'd greatly appreciate it. Regards, Peter Zsitvai -- 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
