Unexpected periodic behaviour of an ultra low latency hard real time multi-threaded x86 code

[5GChacha]

Hi Experts,

If any of you (or know someone who) work or have worked on hard real time implementation on x86, maybe you can you help me with this:

Unexpected periodic behaviour of an ultra low latency hard real time multi-threaded x86 code

I have been struggling to solve this problem from weeks.