Embedded Performance Engineering
Lock-Free 자료구조 성능 — CAS·ABA·Hazard Pointer·Epoch Reclamation
CAS 기반 lock-free와 ABA 문제, hazard pointer와 epoch reclamation 비교.
· 6분 읽기
lock-free cas
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Tech articles, book reviews, and presentations.
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Embedded Performance Engineering
Reader-Writer Lock 성능 — Reader/Writer Priority·RCU·Seqlock
RW-lock의 종류와 reader/writer priority, RCU 비교, seqlock의 read-mostly 대안.
· 6분 읽기
rwlock reader
Embedded Performance Engineering
Mutex 성능 분석 — Futex·Adaptive·Priority Inheritance
Mutex blocking 비용과 Linux futex 2-stage, adaptive mutex, priority inheritance overhead.
· 7분 읽기
mutex blocking
Embedded Performance Engineering
Spinlock 성능 분석 — Spin-Wait vs Context Switch·Ticket·MCS
Spinlock 비용 분석과 ticket lock, MCS lock의 scalability 차이.
· 6분 읽기
spinlock smp
Embedded Performance Engineering
Lock Contention 분석 — Wait·Hold·Convoy·측정 기법
Wait time과 hold time, contention ratio를 측정하고 lock convoy를 회피하는 법.
· 7분 읽기
lock contention
Embedded Performance Engineering
False Sharing 진단 — Cache Line Ping-Pong·Padding·측정
False sharing 원인. Cache coherence ping-pong. Padding으로 line 분리. 측정 방법.
· 4분 읽기
false-sharing cacheline
Embedded Performance Engineering
Concurrency 기초 — Concurrency vs Parallelism·Race·Memory Model
Concurrency vs Parallelism (Rob Pike). Race condition. Memory model 도입.
· 4분 읽기
concurrency parallel
Embedded Performance Engineering
CXL Interconnect 분석 — AI 시대 메모리 대역폭 확장
CXL 2.0/3.1과 Neoverse V2가 만든 cache-coherent interconnect. CXL.io·CXL.cache·CXL.mem 세 프로토콜, Type 1/2/3 디바이스, latency·대역폭의 현실.
· 10분 읽기
cxl interconnect
Embedded Performance Engineering
Thermal Throttling 분석 — Junction Temp·Trip Point·냉각
Junction temperature, thermal sensor, trip point, throttling 동작, 자동차·우주 환경.
· 4분 읽기
thermal throttle
Embedded Performance Engineering
Power vs Performance 트레이드오프 — DVFS·Race-to-Idle·Big.LITTLE
DVFS governor, race-to-idle, big.LITTLE, CPU 코어 hotplug, 측정·tuning.
· 6분 읽기
power dvfs