Curious about EPICS IOC on RTOS for x86

[Matt Rippa via Tech-talk <tech-talk at aps.anl.gov>]

Hello,

Often we start a new epics test or experiment with a Linux target and no real time requirements.

Now I have a (relatively pedestrian) DAQ system with a sample rate in the less than 4KHz range.

I have some questions about real-time choices on x86:

1. Are some folks using an RTEMS-pc386 target with EPICS ?
2. Are some using Linux with PREEMPT_RT patches and EPICS?
3. Any other variant on x86 compatible with EPICS?
4. Any comments on performance preempting kernel threads?
   
5. Has anyone profiled their context switch and interrupt latencies for their system? How did you do this?

Thanks for sharing your experiences!

-Matt