RT-Preemption is causing Very-High Interrupt Latency
I applied RT-preemption and High-Resolution Timer Patch to linux-220.127.116.11 .
It gave satisfactory result for 'cyclic_test' and
But the problem is that Interrupt Latency in much more than before.
This is result which i got from my Interrupt Latency program.
(Max Latency= 513.1 micro seconds and Min Latency= 12.1 micro seconds)
(Max Latency= 13.1 micro seconds and Min Latency= 1.8 micro seconds)
Since, RT-preemption implements ISR like threads, so is this the reason for
higher latency? Is there any way to improve this?