Ubuntu网速慢的问题

[肖(Shaw)晖(Hui)]

Ubuntu 网速慢，主要是把时间浪费在域名解析上。我们可以用dnsmasq解决这问题。
具体如下：

安装dnsmasq

命令: sudo apt-get install dnsmasq

编辑dnsmasq的配置文件

命令: sudo gedit /etc/dnsmasq.conf

找到下面这一项

#resolv-file=

用下面的一条语句替换

resolv-file=/etc/resolv.dnsmasq.conf

确保你没有更改过/etc/resolv.conf文件，如果改过，恢复原状

然后执行命令

sudo cp /etc/resolv.conf /etc/resolv.dnsmasq.conf

然后编辑resolv.conf

命令;sudo gedit /etc/resolv.conf

将其中的域名服务器全部去掉，加入以下这行

nameserver 127.0.0.1

如果用路由上网也可以加上路由的地址

保存，退出

执行以下命令

sudo gedit /etc/ppp/peers/wvdial

在 usepeerdns 前面增加 ＃ ，也就是把这条语句覆盖掉。

以防，resolv.conf的设置被pppoe覆盖。

重启电脑。不重启，你会发现无法解析域名。所以一定要重启电脑，来达到重新启动dnsmasq的目的。

重启后， 你会发现解析速度比以前快了N个数量级。

选择最近的源也可以进一步提高网速

在终端中输入；
$sudo gedit /etc/apt/sources.list 清空后把源地址复制到这里面
$sudo apt-get update 第一个update完之后接着
$sudo apt-get upgrade

PS;源地址
Archive.ubuntu.com 更新服务器(欧洲)：
deb http://archive.ubuntu.com/ubuntu/ dapper main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ dapper-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ dapper-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ dapper-backports main restricted universe multiverse
deb http://archive.ubuntu.org.cn/ubuntu-cn/ dapper main restricted universe multiverse

Ubuntu.cn99.com 更新服务器(江苏省常州市电信，推荐电信用户使用。
deb http://ubuntu.cn99.com/ubuntu/ dapper main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ dapper-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ dapper-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ dapper-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ dapper main restricted universe multiverse

Mirror.lupaworld.com 更新服务器(浙江省杭州市电信，亚洲地区官方更新服务器，推荐全国用户使用
deb http://cn.archive.ubuntu.com/ubuntu dapper main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu dapper-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu dapper-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu dapper-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn dapper main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu dapper-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu dapper main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu dapper-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu dapper-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu dapper-backports main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu dapper-security main restricted universe multiverse

上海市 上海交通大学 更新服务器（推荐教育网和网通用户使用。）
deb http://ftp.sjtu.edu.cn/ubuntu/ dapper main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ dapper-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ dapper-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ dapper-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ dapper-updates main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ dapper main multiverse restricted universe

北京市清华大学 更新服务器（教育网，推荐校园网和网通用户使用。)：
deb http://mirror9.net9.org/ubuntu/ dapper main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ dapper-backports main multiverse restricted universe deb http://mirror9.net9.org/ubuntu/ dapper-proposed main multiverse restricted universe deb http://mirror9.net9.org/ubuntu/ dapper-security main multiverse restricted universe deb http://mirror9.net9.org/ubuntu/ dapper-updates main multiverse restricted universe deb http://mirror9.net9.org/ubuntu-cn/ dapper main multiverse restricted universe

中国 台湾省台湾大学 更新服务器（推荐网通用户使用，电信PING平均响应速度41MS。）(强烈推荐,此源比较完整,较少出现同步问题)
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper-updates main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper-updates main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper-backports main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper-backports main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper-security main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ dapper-security main restricted universe multiverse
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ dapper main multiverse restricted universe

Mirror.vmmatrix.net 更新服务器（上海市电信，推荐电信网通用户使用。）(目前已无法使用):
deb http://mirror.vmmatrix.net/ubuntu/ dapper main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ dapper main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ dapper-updates main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ dapper-updates main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ dapper-backports main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ dapper-backports main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ dapper-security main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ dapper-security main restricted universe multiverse
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ dapper main multiverse restricted universe

ubuntu.cnsite.org 更新服务器 (福建省福州市 电信)
deb http://ubuntu.cnsite.org/ubuntu/ dapper main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ dapper main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ dapper-updates main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ dapper-updates main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ dapper-backports main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ dapper-backports main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ dapper-security main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ dapper-security main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu-cn/ dapper main multiverse restricted universe

mirror.rootguide.org 更新服务器 (上海市 电信):(推荐教育网用户使用)
deb http://mirror.rootguide.org/ubuntu/ dapper main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ dapper main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ dapper-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ dapper-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ dapper-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ dapper-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ dapper-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ dapper-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ dapper-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ dapper-proposed main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu-cn/ dapper main multiverse restricted universe