搬瓦工SS优化

新近在搬瓦工上买了穷人版的套餐.

一键开启ss后, 优化配置操作如下:

 

[STEP 1]

由于使用的是openvz的VPS, 所以优化前需要执行修复命令.

否则会出现"permission denied on key 'xxx'"的异常. 

rm -f /sbin/modprobe
ln -s /bin/true /sbin/modprobe

rm -f /sbin/sysctl
ln -s /bin/true /sbin/sysctl

*这个操作是重建了modprobe, sysctl的soft link. 

 

 

[STEP 2]

修改配置文件: /etc/sysctl.conf 

vi /ect/sysctl.conf 

在文件中添加以下内容:

fs.file-max = 51200
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 1200
net.ipv4.ip_local_port_range = 10000 65000
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_fastopen = 3
# increase TCP max buffer size settable using setsockopt()
net.core.rmem_max = 67108864
net.core.wmem_max = 67108864
# increase Linux autotuning TCP buffer limit
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864
# increase the length of the processor input queue
net.core.netdev_max_backlog = 250000
# recommended for hosts with jumbo frames enabled
net.ipv4.tcp_mtu_probing=1

 更新并重启服务器

sysctl -p
reboot

 

[STEP 3]

安装net_speeder

wget https://coding.net/u/njzhenghao/p/download/git/raw/master/net_speeder-installer.sh

bash net_speeder-installer.sh

安装完成后,启动ns

nohup /usr/local/net_speeder/net_speeder venet0 "ip" >/dev/null 2>&1 &

 ** 我装了ns后, 发现反而变卡了, 所以就又把ns关了...

 

[NOTE]

参考文章:

[1] http://www.40do.com/archives/7411.html

[2] http://www.v2ex.com/t/118233

[3] http://www.111cn.net/sys/CentOS/54693.htm