Linux和macOS系統都支持在線安裝。下面拿macOS做個舉例
<code>➜ brew search stress
==> Formulae
stress stress-ng
➜ brew install stress
Updating Homebrew...
==> Downloading https://homebrew.bintray.com/bottles/stress-1.0.4.catalina.bottle.t
######################################################################## 100.0%
==> Pouring stress-1.0.4.catalina.bottle.tar.gz
/usr/local/Cellar/stress/1.0.4: 11 files, 76.9KB
安裝完成之後可以直接help
➜ stress --help
`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)./<code>安裝之後簡單測試如下
測試CPU負荷
<code>stress -c 4 -t 10 stress: info: [37897] dispatching hogs: 4 cpu, 0 io, 0 vm, 0 hdd stress: info: [37897] successful run completed in 10s/<code>
內存測試
新增4個io進程，10個內存分配進程，每次分配大小1G，分配後不釋放，測試100S
<code>stress -i 4 --vm 10 --vm-bytes 1G --vm-hang 100 --timeout 100s stress: info: [38110] dispatching hogs: 0 cpu, 4 io, 10 vm, 0 hdd stress: info: [38110] successful run completed in 101s/<code>
磁盤I/O測試
輸入命令：stress -d 1 –hdd-bytes 3G
新增1個寫進程，每次寫3G文件塊
硬盤測試（不刪除）這個要謹慎測試
輸入命令：stress -i 1 -d 10 –hdd-bytes 3G -hdd-noclean
新增1個IO進程，10個寫進程，每次寫入3G文件塊，且不清除，會逐步將硬盤耗盡
<code>➜ ~ brew search stress ==> Formulae stress ✔ stress-ng/<code>
這裡可以看到還有一個stress-ng基本都差不多，簡單列舉下
To run 8 CPU stressors with a timeout of 60 seconds and a summary at the end of operations.
<code>sudo stress-ng --cpu 8 --timeout 60 --metrics-brief sudo stress-ng --cpu 8 --timeout 60 --metrics-brief/<code>
2. To run 4 FFT CPU stressors with a timeout of 2 minutes.
<code>sudo stress-ng --cpu 4 --cpu-method fft --timeout 2m/<code>
3. To run 5 hdd stressors and stop after 100000 bogo operations, run this command.
<code>sudo stress-ng --hdd 5 --hdd-ops 100000/<code>
4. To run 8 CPU stressors, 4 I/O stressors and 1 virtual memory stressor using 1GB of virtual memory for one minute, run this command below.
<code>sudo stress-ng --cpu 4 --io 4 --vm 1 --vm-bytes 1G --timeout 60s --metrics-brief/<code>
