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java zero garbage

admin 11月 13, 2020 0

Lib

Network

Aeron
fastutil

CAS

Unsafe
AtomicReference

Framework

Disruptor

Object Pools

Apache Pool2: 性能一般
vibur-object-pool + Conversant Disruptor:

Operation System

CPU Cache Performance

L1
- 4 cycles
L2
- 10 cycles
L3
- local：40~75 cycles
- remote：100~300 cycles
Draw
- local：60ns
- remote：100ns

CPU Cache Line

https://www.cnblogs.com/cyfonly/p/5800758.html

Coding

Reference vs Primitives

Caculations

long
Double
BigDecimal

java.util vs fastutil

http://java-performance.info/hashmap-overview-jdk-fastutil-goldman-sachs-hppc-koloboke-trove-january-2015/