Normal RHEL and PREEMPT_RT patches on same system ? is it possible

Question

Im new to PREEMPT_RT patches, so i was wondering if i can install RHEL and PREEMPT_RT patches in same system, like if one of the core can run PREEMPT_RT s and other run RHEL

so i can do complex time critical tasks on PREEMPT_RT and give a GUI on RHEL which would display it?

is there any such method?

Stock kernel lets you dedicate cores to specific tasks and interrupts. That generally gives better throughput than preempt. — stark, Aug 27 '20 at 12:04

stark · Answer 1 · 2020-08-28T01:53:59.120

0

Use isolcpus on the cmdline to prevent scheduling other processes and taskset to set cpu affinity for the critical processes. For example, on a 4-core system, you might reserve cpus 1-3 for the critical process and schedule everything else on cpu 0. When the critical process is the only task running, preempt is not needed.

edited Aug 28 '20 at 01:53

answered Aug 28 '20 at 01:44

stark

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Normal RHEL and PREEMPT_RT patches on same system ? is it possible

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