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Compiling Linux and Static Analysis Tools

Submitted by Roy Schestowitz on Thursday 3rd of June 2021 12:06:30 PM Filed under
Linux
  • The Apple M1 compiles Linux 30% faster than my Intel i9

    With this Docker-based environment on my 2019 Intel i9 16" MacBook Pro, I can compile the kernel from scratch in about 12 minutes.

    The Intel laptop cost over $3000 when I bought it, and the thing is basically a frying pan on my legs and has two obnoxiously-loud fans running full blast whenever you even look at it sideways.

    I bought both an M1 10 Gbps Mac mini and a M1 MacBook Air to replace the 16" Pro—for the same total price—and I ran the same compile on it, using the exact same configuration.

    Total time for the test was 9 minutes on the mini (which has a fan to keep the CPU cool under load) and 10 minutes on the Air (which doesn't have a fan, so it starts to throttle after a while).

  • Checking the Linux Kernel with Static Analysis Tools

    Earlier this year, Greg Kroah-Hartman, the Linux kernel maintainer for the stable branch, was enraged to find that University of Minnesota (UMN) security “researchers” had tried to poison the Linux kernel with deliberately corrupt patches. Later, the UMN graduate students claimed their patches were good, based on their new static analyzer. Kroah-Hartman didn’t buy it.

    In response, he banned the entire university from submitting kernel patches.

    [The patches] obviously were _NOT_ created by a static analysis tool that is of any intelligence, as they all are the result of totally different patterns and all of which are obviously not even fixing anything at all. So what am I supposed to think here, other than that you and your group are continuing to experiment on the kernel community developers by sending such nonsense patches?

»

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