基准测试

概念

指标

IOPS

Input/output operations per second (IOPS, pronounced eye-ops) is an input/output performance measurement used to characterize computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN). Like benchmarks, IOPS numbers published by storage device manufacturers do not directly relate to real-world application performance.([1])([2])

机械硬盘的 IOPS 往往在几十到几百，固态的可达几千到几十万

常见固态以及磁盘的 IOPS 数据可见 https://en.wikipedia.org/wiki/IOPS

测试工具

IOPS 的测试 benchmark 工具主要有 Iometer, IoZone, FIO 等