cpu 内存占用脚本

更新时间2024.3.13

#shell脚本 CPU压力测试脚本2.0版本

#!/bin/bash

endless_loop() {
    while true; do
        :
    done
}

if [ $# != 1 ]; then
    echo "USAGE: $0 <number_of_processes>"
    exit 1
fi

num_processes=$1
declare -a pid_array

trap 'kill -9 ${pid_array[@]}; exit' INT

for ((i = 0; i < num_processes; i++)); do
    endless_loop &
    pid_array[$i]=$!
done

echo "Running $num_processes processes..."

wait

更新时间2023.10.23

#shell脚本 CPU压力测试脚本

#! /bin/bash
# filename killcpu.sh
endless_loop()
{
echo -ne "i=0;
while true
do
i=i+100;i=100
done" | /bin/bash &
}
if [ $# != 1 ] ; then
echo "USAGE: $0 "
exit 1;
fi
for i in `seq $1`
do
endless_loop
pid_array[$i]=$! ;
done
for i in "${pid_array[@]}"; do
echo 'kill ' $i ';';
done

运行

./killcpu.sh 1
#数值1表示允许1个进场，占用不够就2，以此类推理想为止

杀死

ps -ef | grep /bin/bash
#将过滤出来的/bin/bash的进程号用kill杀死

内存：

#shell脚本 内存压力测试脚本

#!/bin/bash
################################################################
#       Mem Used Script
#       eg. ./mem.sh 10G & to start testing
#       eg. ./mem.sh stop  to stop testing and clear env
#       update: 2020-04-21  charseki
################################################################
num=$1
user=`whoami`
start()
{
if [ -d /tmp/memory ];then
        echo "the dir "/tmp/memory" is already exist!, use it." >> mem.log
else
        sudo mkdir /tmp/memory
        mount -t tmpfs -o size=$num tmpfs /tmp/memory
fi
dd if=/dev/zero of=/tmp/memory/block >> mem.log 2>&1
}
stop()
{
rm -rf /tmp/memory/block
umount /tmp/memory
rmdir /tmp/memory
if [ -d /tmp/memory ];then
        echo "Do not remove the dir \"/tmp/memory\", please check "
else
        echo "clear env is done!"
fi
}
main()
{
if [ $num == 'stop' ];then
        stop
elif [ $user != "root" ];then
        echo "please use the \"root\" excute script!"
        exit 1
else
        start
fi
}
if [ $# = 2 -o $# = 1 ];then
        main
else
        echo 'Usage: <./mem.sh 10G &> to start  or <./mem.sh stop>  to clear env'
fi

模拟占用10G

./metory.sh 10G

停止模拟

./metory.sh stop