这是一个创建于 3537 天前的主题，其中的信息可能已经有所发展或是发生改变。
我的 ubuntu server 版运行在家用虚拟机上，我发现每天第一次登陆总是非常慢，要 7 到 8 秒才出现下面内容，之后就快一些， 3 秒左右，是不是这个屏幕的信息读取导致了启动慢？
但这个信息还是有用的，比如上次登录 IP 之类的
他会在这个时刻去检查更新导致变慢么？
74 packages can be updated.
52 updates are security updates.
Welcome to Ubuntu 14.04.4 LTS (GNU/Linux 4.2.0-27-generic x86_64)
* Documentation: https://help.ubuntu.com/
System information as of Sat Apr 23 00:42:30 CST 2016
System load: 0.08 Processes: 101
Usage of /: 10.2% of 16.86GB Users logged in: 0
Memory usage: 61% IP address for eth0: yyyyyyyy
Swap usage: 0%
Graph this data and manage this system at:
https://landscape.canonical.com/
74 packages can be updated.
52 updates are security updates.
Last login: Sat Apr 23 00:42:40 2016 from gggggggg
但这个信息还是有用的，比如上次登录 IP 之类的
他会在这个时刻去检查更新导致变慢么？
74 packages can be updated.
52 updates are security updates.
Welcome to Ubuntu 14.04.4 LTS (GNU/Linux 4.2.0-27-generic x86_64)
* Documentation: https://help.ubuntu.com/
System information as of Sat Apr 23 00:42:30 CST 2016
System load: 0.08 Processes: 101
Usage of /: 10.2% of 16.86GB Users logged in: 0
Memory usage: 61% IP address for eth0: yyyyyyyy
Swap usage: 0%
Graph this data and manage this system at:
https://landscape.canonical.com/
74 packages can be updated.
52 updates are security updates.
Last login: Sat Apr 23 00:42:40 2016 from gggggggg
第 1 条附言 2016-04-23 16:25:25 +08:00
解决了，是 mot 的原因，和 dns 关系不是太大
https://askubuntu.com/questions/23246/how-do-i-edit-the-ssh-motd
全部禁用以后就快了,缺点是没 ssh 后没信息了
qqqqqqq@ubuntu:/etc/update-motd.d$ time /usr/bin/landscape-sysinfo
System load: 0.32 Processes: 101
Usage of /: 10.0% of 16.86GB Users logged in: 1
Memory usage: 61% IP address for eth0: 192.168xxxxx
Swap usage: 0%
Graph this data and manage this system at:
https://landscape.canonical.com/
real 0m2.329s
user 0m1.844s
sys 0m0.480s
qqqqqq@ubuntu:/etc/update-motd.d$ find
.
./disable
./disable/50-landscape-sysinfo
./disable/90-updates-available
./disable/91-release-upgrade
./disable/98-reboot-required
./disable/10-help-text
./disable/98-fsck-at-reboot
./disable/00-header
https://askubuntu.com/questions/23246/how-do-i-edit-the-ssh-motd
全部禁用以后就快了,缺点是没 ssh 后没信息了
qqqqqqq@ubuntu:/etc/update-motd.d$ time /usr/bin/landscape-sysinfo
System load: 0.32 Processes: 101
Usage of /: 10.0% of 16.86GB Users logged in: 1
Memory usage: 61% IP address for eth0: 192.168xxxxx
Swap usage: 0%
Graph this data and manage this system at:
https://landscape.canonical.com/
real 0m2.329s
user 0m1.844s
sys 0m0.480s
qqqqqq@ubuntu:/etc/update-motd.d$ find
.
./disable
./disable/50-landscape-sysinfo
./disable/90-updates-available
./disable/91-release-upgrade
./disable/98-reboot-required
./disable/10-help-text
./disable/98-fsck-at-reboot
./disable/00-header
 | 1 402124773 2016-04-23 11:29:37 +08:00 之前到网上看到过一个相关的问题分析，最后的原因好像是 DNS 网络的原因导致的，时间长了也不记得哪里看到的了 |
 | 2 Septembers 2016-04-23 11:30:33 +08:00 see http://www.cnblogs.com/ggjucheng/p/3348499.html 主要原因是 GSSAPI 导致 |
 | 3 xuboying OP @Septembers 不是这个问题，慢是密码输入以后 |
 | 4 ETiV 2016-04-23 14:47:19 +08:00 via iPhone sshd_config 里加个 UseDNS no 再重启 ssh 看看？ |
 | 6 neilp 2016-04-23 15:46:50 +08:00 应该是 dns 的问题。 先检查一下 服务器上那个的能正常解析域名吗. 我也遇到过 |
 | 7 Tink PRO 我跟你一样 |
 | 8 jackroyal 2016-04-23 16:03:00 +08:00 |
| 10 Tink PRO 应该是 dns ，我把服务器 ip 加到 hosts 里之后快多了 |
 | 11 akira 2016-04-23 16:17:31 +08:00 域名反向解析的原因吧 |
| 12 xuboying OP  1 @402124773 @ETiV @Septembers @Tink @jackroyal @neilp 解决了，是 mot 的原因，和 dns 关系不是太大 https://askubuntu.com/questions/23246/how-do-i-edit-the-ssh-motd 全部禁用以后就快了,缺点是没 ssh 后没信息了 qqqqqqq@ubuntu:/etc/update-motd.d$ time /usr/bin/landscape-sysinfo System load: 0.32 Processes: 101 Usage of /: 10.0% of 16.86GB Users logged in: 1 Memory usage: 61% IP address for eth0: 192.168xxxxx Swap usage: 0% Graph this data and manage this system at: https://landscape.canonical.com/ real 0m2.329s user 0m1.844s sys 0m0.480s qqqqqq@ubuntu:/etc/update-motd.d$ find . ./disable ./disable/50-landscape-sysinfo ./disable/90-updates-available ./disable/91-release-upgrade ./disable/98-reboot-required ./disable/10-help-text ./disable/98-fsck-at-reboot ./disable/00-header |
 | 13 whatisnew 2016-04-23 17:38:20 +08:00 如果不装 `ubuntu standard system utilities` 就没事 |
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