The Tales of the Cursed Operating Systems Textbook!
summary
Cursed textbook chapters map to concrete failures and fixes: kernel slab memory explodes from retained on_vma objects leading to OOM kills, diagnosed via /proc and slabtop and cured by full process restarts; local IPCs take ~40 ms because Nagle plus delayed ACK creates mutual wait, fixed by changing TCP behavior; MongoDB snapshots corrupt when fsync happens without locking, traced to async kernel write buffers. Tools: strace, /proc inspection, restarts and config changes.
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chapters (6)
- 0:00Start
- 0:19The Tale Of The Cursed Operating Systems Textbook
- 1:38Grimoire "A book of magic spells and incantations"
- 1:57Chapter 1 it's coming from INSIDE THE KERNEL
- 4:54Chapter 2 fiNAGLEing
- 10:05WHAT'S NEXT concurrency!!! - scheduling ???
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