xUbuntu 启动需要 3m，而 1m30s Win 7 或 SliTaz 20s（无与伦比）2m Mac OS X (Hackintosh)
我的笔记本电脑有一个 Celeron 64 位 CPU 4 gig 的 RAM 和一个 2009 年末的旧 Nvidia 卡
6400 RPM 硬盘（我认为）500国标
21.590s NetworkManager-wait-online.service
8.665s systemd-udev-settle.service
7.912s gpu-manager.service
5.891s ModemManager.service
5.099s dev-disk-by\x2duuid-6d3e8de2\x2d2956\x2d4bfb\x2db65d\x2dbb534f2
5.027s NetworkManager.service
4.532s accounts-daemon.service
3.909s binfmt-support.service
3.551s plymouth-quit-wait.service
3.495s rsyslog.service
3.488s systemd-user-sessions.service
3.488s grub-common.service
3.484s avahi-daemon.service
3.481s ondemand.service
3.475s thermald.service
3.071s systemd-logind.service
3.053s lm-sensors.service
3.039s apport.service
3.035s bluetooth.service
3.031s speech-dispatcher.service
3.027s pppd-dns.service
3.026s irqbalance.service
1.433s systemd-tmpfiles-setup-dev.service
1.391s apparmor.service
1.264s systemd-modules-load.service …