Ubuntu prides itself on being among the most compatible Linux distributions. Compatibility is often a conscious trade-off against bleeding-edge performance. In Ubuntu 25.10, we have added support for packages that target specific silicon variants, meaning you can have your cake and eat it too! Back in 2023 I wrote an article talking about the history of the amd64/x86-64 architecture and described the “levels” x86-64-v2, -v3, and -v4 (often referred to as amd64v3, amd64v4, etc.). Since then, we’...
  • masterofn001@lemmy.ca
    3·
    6 days ago

    most packages show a slight (around 1%) performance improvement and some packages, mostly those that are somewhat numerical in nature, improve more than that.

    1%

    All that work for 1%?

    And what does ‘somewhat numerical in nature’ and ‘more than that’ mean ?

    The calculator gets 1.2% ?

    • brucethemoose@lemmy.world
      4·
      6 days ago

      Old tests on old compilers run on old Intel CPUs may have regressions. I forget the details, but back when all this was new, some CPUs would downclock if they even *see *an AVX2/AVX512 instruction.

      Modern CPUs (mostly) don’t do that.

      It also shrinks the packages some (so less bandwidth and client disk usage, at the cost of compile time/disk space on the host’s side, which is a decent trade), and applications that show more improvement tend to be more intense anyway.

    • sga@piefed.socialEnglish
      3·
      6 days ago

      its not calculator, but often stuff which benefits from avx, so hashing, compression, etc.