runaway latency detection

Trying to isolate PREEMPT_RT (full preemption) runaway latency conditions seen when using the cyclictest on the 4.1.8 SMP PREEMPT_RT kernel. Seen average latency of 3uS, but runaway or outlier max latency random spikes seem indeterminate. Noted 72uS with one run of the cyclictest for example.

Moving GPIO interrupts and IPIs to a core other than 0

On the 4.1.8-rt8+gdb51baf SMP PREMPT RT kernel, GPIO interrupts are assigned to core 0 as are the following IPI interrupts: Arch_timer Rescheduling Interrupt Function call interrupt Trying to assign GPIO interrupts to core 2 for example, or trying to reassign or move IPI interrupts running on c

Moving GPIO interrupts and IPIs to a core other than 0

On the 4.1.8-rt8+gdb51baf SMP PREMPT RT kernel, GPIO interrupts are assigned to core 0 as are the following IPI interrupts: Arch_timer Rescheduling Interrupt Function call interrupt Trying to assign GPIO interrupts to core 2 for example, or trying to reassign or move IPI interrupts running on c

runaway latency detection

Trying to isolate PREEMPT_RT (full preemption) runaway latency conditions seen when using the cyclictest on the 4.1.8 SMP PREEMPT_RT kernel. Seen average latency of 3uS, but runaway or outlier max latency seems indeterminate. Noted 72uS with one run of the cyclictest for example. Is this a kno