Graduating from 'just run tcpdump'. A cheat sheet covering TTFB traps, TCP backlog drops, TIME_WAIT port exhaustion, and tracking down true network latency.
Why allocated isn't consumed. A cheat sheet on demand paging, the horrors of swapping, allocators, and profiling real memory performance.
What happens behind 100% CPU usage? A skim-friendly cheat sheet covering run queues, context switching, IPC, and profiling tricks.
Why are system calls slow? What is %si? A skim-friendly cheat sheet for essential OS and kernel internals to survive performance analysis.
Diagnose elusive cloud performance traps, Noisy Neighbor effects, and container CPU throttling with this Chapter 11 skim-friendly cheat sheet.
Benchmarking results are famously misleading. Here are the critical traps you must avoid when evaluating system changes.
Application analysis yields massive gains. Here are practical techniques and profiling pitfalls from Chapter 5, organized into a cheat sheet.
A skim-friendly summary of the key concepts and pitfalls from Chapter 2 (Methodology) of 'Systems Performance, 2nd Edition'.
