一·开机优化
1.查询开启启动服务耗时
sudo systemd-analyze blame
例如我执行后的结果:
$ sudo systemd-analyze blame
1min 22.897s sendmail.service
24.741s systemd-tmpfiles-clean.service
9.489s proc-sys-fs-binfmt_misc.mount
8.186s rsyslog.service
8.073s systemd-networkd-wait-online.service
3.484s NetworkManager-wait-online.service
3.164s udisks2.service
2.522s dev-sda2.device
2.293s systemd-udev-settle.service
2.123s cloud-config.service
2.041s snap.lxd.activate.service
1.936s systemd-journal-flush.service
1.894s cloud-init-local.service
1.880s cloud-init.service
1.785s bt.service
1.592s cloud-final.service
1.372s snapd.service
1.267s nginx.service
928ms accounts-daemon.service
819ms networkd-dispatcher.service
753ms [email protected]
2.根据结果找出需要优化的内容,搜索优化方法
根据上面的结果,需要优化的服务: sendmail.service systemd-tmpfiles-clean.service
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