linux

Tags: computers

• Currently Linux plumber and hobbiest occupy two different workds
  • Desktop linux and DevOps middleware are paid employees, vs poeple who use suckless softawre, musl-based distros

Tracing

• https://jvns.ca/blog/2017/07/05/linux-tracing-systems/
• ebpf

Debian

perf performance issues

• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911815
  • when not linked against libbfd, perf calls out to addr2line for every address lookup, which is infeasible
  • possible solution: https://michcioperz.com/post/slow-perf-script/
  • patches: https://lore.kernel.org/linux-perf-users/20210909112202.1947499-1-tonyg@leastfixedpoint.com/

Linux Audio

• Pipewire: http://pipewire.org
  • provides low latency, graph based processing for audio

LD_PRELOAD and LD_LIBRARY_PATH

• Different usages on os x, uses DYLD_LIBRARY_PATH and DYLD_FALLBACK_LIBRARY_PATH
  • See https://stackoverflow.com/questions/3146274/is-it-ok-to-use-dyld-library-path-on-mac-os-x-and-whats-the-dynamic-library-s
  • https://github.com/Jackett/Jackett/issues/5589

Linux Kernel Headers

• https://lwn.net/ml/linux-kernel/YdIfz+LMewetSaEB@gmail.com/