通过shell来占用服务器资源

#!/bin/bash 

use_cpu=$1
use_mem=`expr $2 \* 1024`
kill_file=kill_use_cpu_mem.sh

: > ${kill_file}

endless_loop(){   
  echo -ne "i=0; while true do i=i+100; i=100; done" | /bin/bash &  
}  

echo "USAGE: $use_cpu <cpus>"  

for i in `seq $1`  
do  
endless_loop  
pid_array[$i]=$!;  
done  
  
for i in "${pid_array[@]}"; do  
echo 'kill' $i >> ${kill_file};  
done  

mkdir -p /tmp/memory  
mount -t tmpfs -o size=1024M tmpfs /tmp/memory  
dd if=/dev/zero of=/tmp/memory/block  
sleep 3600  
echo "rm /tmp/memory/block"  >> ${kill_file}
echo "umount /tmp/memory"  >> ${kill_file}
echo "rmdir /tmp/memory"  >> ${kill_file}