Conversation

Notices

1. Santa Claes 🇸🇪🇭🇰🎅 (clacke@libranet.de)'s status on Saturday, 26-Feb-2022 05:16:36 UTC Santa Claes 🇸🇪🇭🇰🎅
   Ingo Molnar's "fast-headers" branch of Linux speeds up the typical build by 20% by restructuring header files and decoupling dependencies.
   
   > All together, Molnar estimates that "in addition to the aforementioned 25 sub-trees and 2,200 commits, the fast-headers tree modifies over half of all kernel source files in existence." It's going to change 25,288 files with 178,024 insertions and 74,720 deletions. In other words, "Yeah, so this is probably the largest single feature announcement in LKML's [Linux Kernel Mailing List] history. Not by choice! 😕"
   
   www.zdnet.com/article/cleaning…
   • Santa Claes 🇸🇪🇭🇰🎅 (clacke@libranet.de)'s status on Saturday, 26-Feb-2022 08:54:14 UTC Santa Claes 🇸🇪🇭🇰🎅

     in reply to

     • Ed S
     @EdS Wow, you're right. That's really amazing.
   • Ed S (eds@mastodon.sdf.org)'s status on Saturday, 26-Feb-2022 08:54:15 UTC Ed S

     in reply to

     That's much much more than a 20% speed-up! It's a factor of 2x or even 5x.

     """
     today, his cleaned-up "fast-headers tree offers a +50-80% improvement in absolute kernel build performance"
     """

     @clacke

   • jay 🌺 (j12i@weirder.earth)'s status on Saturday, 26-Feb-2022 17:24:07 UTC jay 🌺

     in reply to

     @clacke it really says he achieved a speedup of 78%!

     Santa Claes 🇸🇪🇭🇰🎅 likes this.
   • Santa Claes 🇸🇪🇭🇰🎅 (clacke@libranet.de)'s status on Saturday, 26-Feb-2022 17:24:35 UTC Santa Claes 🇸🇪🇭🇰🎅

     in reply to

     • jay 🌺
     @j12i Yes! I think I glanced over that and thought it sounded too good to be true.
   • jay 🌺 (j12i@weirder.earth)'s status on Saturday, 26-Feb-2022 17:46:45 UTC jay 🌺

     in reply to

     @clacke It's only in one benchmark, but it doesn't sound like it was selected biased.

     Santa Claes 🇸🇪🇭🇰🎅 likes this.