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Cake day: June 4th, 2023

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  • A typical data center rack holds about 40 servers, each with at least two networking interfaces. According to Boote, the Ethernet interfaces of a single rack draw 160 watts in total.

    “Reducing the power draw of a data center, which may have hundreds or thousands of racks, would be akin to an energy savings of switching a building from incandescent to more energy efficient LED lighting and be well worth the investment,” he told LinuxInsider.

    According to Boote, this optimization fixes a part of the kernel written when lower-speed Ethernet interfaces drew a fraction of today’s electrical needs. The networking stack design did not account for the growing power budget required by modern networking interfaces.

    “By changing the priority of how the computers schedule tasks during high bandwidth events, a computer can better deal with networking traffic and prioritize energy expenditure in a way that makes sense for modern hardware and architectures,” he reasoned.


  • Oh boy, where do I even start? This comment is wrong in multiple ways. Let’s break it down:

    1. “The way triangulation works is by essentially measuring distance.”

      • Nope. This describes trilateration, not triangulation.
      • Triangulation uses angles, while trilateration uses distances. GPS works via trilateration.
    2. “1 satellite distance puts you anywhere in a radius (circle) of that satellite.”

      • Kind of, but missing a crucial detail:
        • A single satellite defines a sphere around itself (not just a circle—you exist in 3D space).
    3. “2 Satellites puts you at 1 of 2 locations where those radiuses intersect.”

      • Wrong. Two satellite distance spheres intersect to form a circle, not just two points.
    4. “3 satellites gives you a single location.”

      • Mostly right, but incomplete.
      • In theory, three satellites narrow it down to two possible points, but one is often out in space or somewhere unrealistic, so it can often be ruled out.
      • However, because your device lacks an atomic clock, it typically requires four satellites to synchronize time properly.
    5. “That’s why it’s called triangulation. Tri = 3”

      • Nope. GPS does NOT use triangulation.
      • The “tri” in triangulation comes from angles, not the number of satellites. GPS uses trilateration, which is based on measuring distances, not angles.

    Final Verdict

    This comment is a trainwreck of incorrect terms and flawed explanations. If they meant “trilateration,” at least part of it would make sense, but calling it “triangulation” completely ruins their credibility.

    So, in short? No, their comment is very incorrect. 🚨