Software Tuning, Performance Optimization & Platform Monitoring
Discussion regarding monitoring and software tuning methodologies, Performance Monitoring Unit (PMU) of Intel microprocessors, and platform updating.

Is it possible to change the QPI_rate (CSR register) in linux?


I searched Google and found the CSR register to change the QPI_rate of the Intel CPU.


I have tried to change the QPI_rate value using the PCM tool, but it is possible to read the value but not write.


I would like to know if there is any way to change the QPI_rate value.


Please let me know if the setpci command or any other method on Linux instead of changing it in BIOS.

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