Fedora
為什麼開機慢?
我正在使用 Fedora 23,MATE 版。電腦感覺啟動很慢。我怎樣才能加快速度?
完整詳情http://i.imgur.com/vrLGXDp.jpg
$ systemd-analyze Startup finished in 16.571s (firmware) + 2.605s (loader) + 824ms (kernel) + 1.997s (initrd) + 48.466s (userspace) = 1min 10.464s $ systemd-analyze blame 31.448s mlocate-updatedb.service 18.211s akmods.service 16.019s firewalld.service 9.127s systemd-journald.service 7.709s accounts-daemon.service 7.368s dev-sdd3.device 7.037s systemd-udev-settle.service 5.219s abrtd.service 4.854s chronyd.service 4.629s ModemManager.service 4.081s livesys.service 3.958s unbound-anchor.service 3.920s systemd-logind.service 3.823s rsyslog.service 3.781s gssproxy.service 3.780s akmods-shutdown.service 3.698s avahi-daemon.service 3.651s mcelog.service 3.636s rtkit-daemon.service 2.735s polkit.service 2.163s systemd-udevd.service 2.150s lvm2-monitor.service 1.569s proc-fs-nfsd.mount $ systemd-analyze critical-chain The time after the unit is active or started is printed after the "@" character. The time the unit takes to start is printed after the "+" character. graphical.target @35.395s └─lightdm.service @34.563s +830ms └─systemd-user-sessions.service @34.146s +129ms └─remote-fs.target @34.143s └─remote-fs-pre.target @34.143s └─iscsi-shutdown.service @34.128s └─network.target @34.019s └─NetworkManager.service @33.009s +1.009s └─firewalld.service @16.979s +16.019s └─polkit.service @17.870s +2.735s └─basic.target @12.883s └─sockets.target @12.864s └─dbus.socket @12.844s └─sysinit.target @12.704s └─sys-fs-fuse-connections.mount @48.351s +3ms └─system.slice └─-.slice
這是已知問題,在Red Hat Bugzilla中有描述:
systemd 缺乏 cron 的隨機延遲功能正在打擊我們。我已經看到有一個功能請求。但在此之前,似乎在執行 updatedb 之前手動設置隨機睡眠是一種解決方法。我建議現在恢復使用 cron 來執行 updatedb,或者在執行 updatedb 之前放置一個隨機或特定的睡眠:例如 sleep 1h
解決方法:
sed 's/daily/weekly/' /usr/lib/systemd/system/mlocate-updatedb.timer >/etc/systemd/system/mlocate-updatedb.timer
現在我只需要忍受週一的緩慢啟動。