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Hi Martin, it seems Intel recently updated MSRs docs (page 35-142) about Haswell (and Broadwell): they've added three very interesting MSRs that show the exact reason(s) why CPU, GPU or Uncore are slowed down in real-time. (like PROCHOT, Thermal, Graphics driver, Low Utilization, VRM Therm...

Hi Martin, I've found HWinfo sensor monitoring is causing audio/video glitches (from DPC latency spikes) on some Haswell mobile cpus under load. Fortunately disabling Periodic polling of Bus Clock completely fixed them. I think it should be disabled by default (poll only on startup): people...