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压力测试工具stress

压力测试工具stress

stress是linux下常用的压力测试工具，这里介绍如何使用stress对板子性能进行测试

安装

这里以ubuntu为例

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$ sudo apt install stress

测试

直接运行stress,能看到stress的命令参数说明

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$ stress
`stress' imposes certain types of compute stress on your system

Usage: stress [OPTION [ARG]] ...
 -?, --help         show this help statement
     --version      show version statement
 -v, --verbose      be verbose
 -q, --quiet        be quiet
 -n, --dry-run      show what would have been done
 -t, --timeout N    timeout after N seconds
     --backoff N    wait factor of N microseconds before work starts
 -c, --cpu N        spawn N workers spinning on sqrt()
 -i, --io N         spawn N workers spinning on sync()
 -m, --vm N         spawn N workers spinning on malloc()/free()
     --vm-bytes B   malloc B bytes per vm worker (default is 256MB)
     --vm-stride B  touch a byte every B bytes (default is 4096)
     --vm-hang N    sleep N secs before free (default none, 0 is inf)
     --vm-keep      redirty memory instead of freeing and reallocating
 -d, --hdd N        spawn N workers spinning on write()/unlink()
     --hdd-bytes B  write B bytes per hdd worker (default is 1GB)

Example: stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 10s

Note: Numbers may be suffixed with s,m,h,d,y (time) or B,K,M,G (size).
  1. CPU测试
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$ stress --cpu N
  1. 内存测试
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$ stress --vm N --vm-bytes 300M

--vm-bytes指定单个进程占的内存

  1. 磁盘测试
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$ stress --io N --hdd N --hdd-bytes 512M

--io 产生N个进程反复调用sync，--hdd产生N个进程写入固定大小临时文件再删除，--hdd-bytes指定文件大小