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AMD To Optimize C3 Entry On Linux By Finally Skipping The Cache Flush

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  • AMD To Optimize C3 Entry On Linux By Finally Skipping The Cache Flush

    Phoronix: AMD To Optimize C3 Entry On Linux By Finally Skipping The Cache Flush

    A minor optimization was posted by an AMD engineer on Wednesday for the Linux kernel...

    https://www.phoronix.com/scan.php?pa...C3-Cache-Flush

  • #2
    This sounds like a clear-win optimization. I wonder though how easily it is to benchmark this optimization's effect.

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    • #3
      Originally posted by bezirg View Post
      This sounds like a clear-win optimization. I wonder though how easily it is to benchmark this optimization's effect.
      It might result in slightly lower power consumption in games in case the framerate is limited by vsync.

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      • #4
        Why does it feel like this is shit that should have been done half a decade ago. When is AMD building up their linux software team? They want the enterprise money, and yet...

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        • #5
          Originally posted by bezirg View Post
          This sounds like a clear-win optimization. I wonder though how easily it is to benchmark this optimization's effect.
          I think you would need to benchmark single threading application, while the other cores will be alternately busy/idle with some fake load.

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          • #6
            Not likely to change that much.
            But every bit counts. So while late, definitely a good thing.

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            • #7
              In which kernel?

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              • #8
                I tried that optimization at home. Didn't work out as well as I expected. No one appreciated me not flushing my cache and leaving the toilet bowl full.

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