CPU Power Management Issues
Many users have reported that they suffered latency problems due to CPU power management issues. Several
problems can be solved by disabling variable speed related settings in the BIOS setup program such as:
Intel Speedstep technology
Intel TurboBoost technology
AMD Cool N Quiet technology
It may be that these problems are caused because these power features cause the system to temporarily operate
in SMM (System Management Mode). It may also be these latencies are caused by CPU bugs related to these features.
Check out the following page regarding SMIs and CPU stalls.
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