为小内存的kvm vps安装锐速-55后做内存优化

内存优化

将脚本设置crontab任务，建议每几分钟执行一次

cleanmem.sh代码如下：

#!/bin/bash
used=`free -m | awk ‘NR==2’ | awk ‘{print $3}’`
free=`free -m | awk ‘NR==2’ | awk ‘{print $4}’`
echo “===========================” >> /var/log/mem.log
date >> /var/log/mem.log
echo “Memory usage | [Use：${used}MB][Free：${free}MB]” >> /var/log/mem.log
if [ $free -le 100 ] ; then
sync && echo 1 > /proc/sys/vm/drop_caches
sync && echo 2 > /proc/sys/vm/drop_caches
sync && echo 3 > /proc/sys/vm/drop_caches
echo “OK” >> /var/log/mem.log
else
echo “Not required” >> /var/log/mem.log
fi

后台进程检查

将脚本设置crontab任务，建议每几分钟执行一次

check_mem.sh代码如下：

#!/bin/bash
#检查shadowsocks
if ps -ef|grep “shadowsocks”|grep -v “grep”
then
echo “shadowsocks is running!” `date` >> /var/log/check.log
else
echo “shadowsocks is topped!” `date` >> /var/log/check.log
/usr/bin/python /usr/bin/ssserver -c /etc/shadowsocks.json -d start
fi
#检查锐速serverspeeder
if ps -ef|grep “serverspeeder”|grep -v “grep”
then
echo “serverspeeder is running!” `date` >> /var/log/check.log
else
echo “serverspeeder is stopped!” `date` >> /var/log/check.log
/serverspeeder/bin/serverSpeeder.sh start
fi