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Linux 5.12: Perf and Sound

Submitted by Roy Schestowitz on Saturday 20th of February 2021 08:18:24 PM Filed under
Linux
  • Linux 5.12 Adds Instruction Latency Reporting To Perf - Phoronix

    An exciting new capability with perf in Linux 5.12 is the ability to collect instruction latency metrics as part of the performance reports, but relies on hardware capabilities for now only found in next-generation Intel Xeon "Sapphire Rapids" processors.

    Linux 5.12 adds the ability to support instruction latency metrics as part of perf report collections. The instruction latency metrics paired with the memory latency data can help developers understand expensive instructions and the time being spent in the different CPU stages. It will be fun when this ability is more widespread across processors and interesting if it can end up being used for helping to generate more accurate cost tables for compiler targets among other use-cases.

  • Sound Updates For Linux 5.12 Include Intel Alder Lake P, Other New Hardware - Phoronix

    The sound subsystem changes were submitted on Friday by maintainer Takashi Iwai of SUSE for the in-development Linux 5.12 kernel.

    The sound/audio highlights for the Linux 5.12 kernel include:

    - Support for software jack injection for testing/debugging purposes.

»

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