Use Red Hat Enterprise Linux for Real Time
Use the Red Hat Enterprise Linux for Real Time (real-time kernel) for workloads with stringent low-latency determinism requirements for core kernel features. The real-time kernel provides consistent, low-latency determinism and predictable response times.
When considering system tuning, consider the following factors:
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System tuning is just as important when using the real-time kernel as it is for the standard kernel.
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Installing the real-time kernel on an untuned system running the standard kernel supplied as part of the RHEL 9 release is not likely to result in any noticeable benefit.
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Tuning the standard kernel yields 90% of possible latency gains.
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The real-time kernel provides the last 10% of latency reduction required by the most demanding workloads.