3 ms·

Is there an architectural change and/or approach to which the boot performance increase(s) can be attributed? If not, which is understandable, is there somethi

Is there an architectural change and/or approach to which the boot performance increase(s) can be attributed? If not, which is understandable, is there something specific to stable/14 for interested parties to familiarize themselves with?

cbhl 2y ago
My impression is that cperciva has been working on FreeBSD/EC2 boot times for the last six years, not just specifically some changes in 14. The most accessible summary of his work is probably on his Patreon: https://www.patreon.com/c/cperciva/posts https://www.patreon.com/c/cperciva/posts. If you go digging there are also some anecdotes on his Twitter too; most recent I can find is https://x.com/cperciva/status/1833735559614988526 https://x.com/cperciva/status/1833735559614988526
- cperciva 2y ago
  I gave a talk at BSDCan 2022 about this ("speeding up the FreeBSD boot") -- I'm on my phone right now so I can't provide a link but it's on YouTube. There's also a somewhat out of date summary of most of the work on the FreeBSD wiki: https://wiki.freebsd.org/BootTime https://wiki.freebsd.org/BootTime
  - homebrewer 2y ago
    https://www.youtube.com/watch?v=10XRCiBtyhA https://www.youtube.com/watch?v=10XRCiBtyhA
cperciva 2y ago
The best summary I can provide is "profiling and lots of small wins".