使用工具stress
Centos
# yum -y install stress
Ubantu
# apt-get install stress
# 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).
https://blog.csdn.net/yujia_666/article/details/89317310
查看CPU信息
cpu详细信息
# lscpu
cpu个数：
# cat /proc/cpuinfo |grep 'physical id'|sort -u|wc -l
2
cpu核数：
# cat /proc/cpuinfo |grep 'core id'|sort -u|wc -l
24
cpu线程数：
# cat /proc/cpuinfo |grep 'processor'|sort -u|wc -l
96
根据线程测试cpu：
# stress -c 96
stress: info: [7461] dispatching hogs: 96 cpu, 0 io, 0 vm, 0 hdd
再开一个终端使用top查看
以下转载自https://blog.csdn.net/YINHAOXU1/article/details/72868888
CPU：
# vim test-cpu.sh
# chmod +x test-cpu.sh
# cat test-cpu.sh
while [ 1 ]
do
echo 1 >> /dev/null
done
或者：
# while [ 1 ];do : ;done
python 转载自https://www.cnblogs.com/guixie/p/11834707.html
# yum -y install python
# vim test_mem.py
# chmod +x test_mem.py
# cat test_mem.py
#! /user/bin/env python
# -*- encoding: utf-8 -*-
import sys
import re
import time
from multiprocessing import Process,cpu_count
def print_help():
print('Usage: ')
print(' python test_mem.py m 1GB')
print(' python test_mem.py c 1')
print(' python test_mem.py mc 1GB 2')
#实现占用内存
def mem():
pattern = re.compile('^(\d*)([M|G]B)$')
size = sys.argv[2].upper()
match = pattern.match(size)
if match:
num = int(match.group(1))
unit = match.group(2)
if unit == 'MB':
s = ' ' * (num * 1024 * 1024)
else:
s = ' ' * (num * 1024 * 1024 * 1024)
time.sleep(24 * 3600)
else:
print("bad args.....")
print_help()
#cpu满载
def deadloop():
while True:
pass
#根据传参来指定占满几个核
def cpu():
arg = sys.argv[2] if len(sys.argv) == 3 else sys.argv[3]
cpu_num = cpu_count()
cores = int(arg)
if not isinstance(cores,int):
print("bad args not int")
return
if cores > cpu_num:
print("Invalid CPU Num(cpu_count="+str(cpu_num)+")")
return
if cores is None or cores <1:
cores = 1
for i in range(cores):
Process(target=deadloop).start()
def mem_cpu():
Process(target=mem).start()
Process(target=cpu).start()
if __name__ == "__main__":
if len(sys.argv) >= 3:
switcher = {
'm': mem,
'c': cpu,
'mc': mem_cpu
}
switcher.get(sys.argv[1], mem)()
else:
print_help()
# python test_mem.py
Usage:
python test_mem.py m 1GB #Mem占用1GB，支持使用MB
python test_mem.py c 1 #CPU 1核满载
python test_mem.py mc 1GB 2 #CPU 1核满载，并且指定Mem占用2GB
