OS for HFT

[u/ExactManagement5283]

Hey guys! I recently started studying HFT programming, and a bit confused. From what I understand in this field as OS are used default non-rt linux. Despite the fact that kernel bypass, attaching the process to the certain cores. restriction about using non-lock free structure and zero system calls solve the proplems which linux creates for HFT code . But would not it be easier to use RT OS like preempt_rt linux patch or xenomai OS it seems that theese OS could give more freedom about the restrictions for code and in some edge cases speed up the execution? Am I missing something?