How to quicken my boot time??
Which I think it is about removing the "dev-loop8.device" and its friend, it boots multiple time as show in logs
I do realize this is because the previous time I did installed ubuntu>do some tweaks and broke the enviroment of its, even i did restoring it wont help
Learned the hard lesson not to install gnome shell and it will break my UI.
Learned that installed Deepin DDE which makes me regret it more because easy to install but hard to remove and accidentally lead me to manually install ubuntu through safe-root-cmd(i didnt know how to explain but thanks to someone here, i did reinstalled the default Gnome desktop).
Now, I think I love this KDE environment on my Ubuntu(which now shown as Kubuntu hahaha as boot loading), easy to adjust for a beginner Linux user like me. But the problem is.... base on System Diagnose Logs(systemd blame method)
my previous installation still not cleaned.
I know I messed things up a lot. But please give me A hints how to remove those multiple boot loading?
result systemd-analyze blame
25.435s dev-sda7.device
17.152s snapd.service
13.125s udisks2.service
12.678s networkd-dispatcher.service
9.989s dev-loop8.device
9.989s dev-loop9.device
9.508s dev-loop17.device
9.398s dev-loop16.device
9.076s dev-loop11.device
8.997s dev-loop21.device
8.686s dev-loop13.device
8.594s dev-loop3.device
8.301s dev-loop14.device
8.255s dev-loop23.device
8.051s dev-loop18.device
7.939s dev-loop15.device
7.766s dev-loop12.device
7.454s dev-loop10.device
7.330s dev-loop19.device
7.319s polkit.service
7.311s dev-loop22.device
7.220s NetworkManager.service
7.207s dev-loop20.device
7.201s NetworkManager-wait-online.service
7.165s avahi-daemon.service
6.901s dev-loop1.device
6.679s dev-loop2.device
6.602s systemd-logind.service
6.599s wpa_supplicant.service
6.338s dev-loop7.device
6.016s gpu-manager.service
5.809s dev-loop6.device
4.973s dev-loop4.device
4.796s apport-autoreport.service
4.466s dev-loop5.device
4.270s ModemManager.service
3.286s dev-loop0.device
2.978s fwupd-refresh.service
2.974s apport.service
2.092s grub-common.service
1.670s fwupd.service
1.663s apparmor.service
1.586s upower.service
1.538s snap-norka-141.mount
1.422s snap-gtk\x2dcommon\x2dthemes-1515.mount
1.410s systemd-sysctl.service
1.378s snap-snap\x2dstore-547.mount
1.355s snapd.apparmor.service
1.354s snap-snapd-12704.mount
1.319s snap-gnome\x2d3\x2d38\x2d2004-87.mount
1.295s snap-snap\x2dstore-558.mount
1.230s snap-snapd-14295.mount
1.181s systemd-resolved.service
1.180s lm-sensors.service
1.089s snap-gnome\x2d3\x2d34\x2d1804-77.mount
1.028s [email protected]
1.021s snap-gtk\x2dcommon\x2dthemes-1519.mount
1.008s snap-qt551-39.mount
949ms snap-gnome\x2d3\x2d28\x2d1804-161.mount
912ms snap-gnome\x2d3\x2d34\x2d1804-72.mount
910ms systemd-networkd.service
878ms ua-timer.service
847ms snap-android\x2dstudio-115.mount
810ms systemd-modules-load.service
783ms snap-bare-5.mount
742ms snap-code-85.mount
728ms snap-core-11993.mount
725ms snap-core18-2128.mount
721ms systemd-udevd.service
705ms snap-core18-2253.mount
696ms snap-core20-1270.mount
620ms keyboard-setup.service
585ms alsa-restore.service
584ms systemd-sysusers.service
551ms e2scrub_reap.service
479ms grub-initrd-fallback.service
472ms systemd-tmpfiles-setup-dev.service
459ms systemd-tmpfiles-setup.service
454ms systemd-random-seed.service
434ms snapd.seeded.service
418ms snap-curl-623.mount
389ms snap-figma\x2dlinux-149.mount
307ms snap-firefox-777.mount
305ms systemd-udev-trigger.service
295ms systemd-user-sessions.service
284ms systemd-networkd-wait-online.service
272ms systemd-fsck@dev-disk-by\x2duuid-67EC\x2dEF24.service
272ms systemd-backlight@backlight:radeon_bl0.service
260ms systemd-journald.service
242ms kerneloops.service
229ms swapfile.swap
220ms snap-gimp-383.mount
209ms plymouth-read-write.service
209ms plymouth-read-write.service
194ms snap-flutter-111.mount
194ms snap-flutter-111.mount
164ms setvtrgb.service
152ms hddtemp.service
140ms sddm.service
131ms boot-efi.mount
116ms dev-hugepages.mount
114ms dev-mqueue.mount
113ms sys-kernel-debug.mount
112ms systemd-tmpfiles-clean.service
111ms sys-kernel-tracing.mount
105ms kmod-static-nodes.service
100ms systemd-journal-flush.service
96ms rtkit-daemon.service
96ms systemd-rfkill.service
94ms systemd-remount-fs.service
83ms console-setup.service
61ms ufw.service
48ms systemd-update-utmp.service
38ms proc-sys-fs-binfmt_misc.mount
36ms pppd-dns.service
27ms [email protected]
25ms plymouth-quit.service
21ms plymouth-start.service
11ms systemd-update-utmp-runlevel.service
9ms sys-fs-fuse-connections.mount
7ms sys-kernel-config.mount
7ms gdm3.service
result of systemd-analyze & systemd-analyze critical-chain
systemd-analyze
Startup finished in 9.656s (kernel) + 52.854s (userspace) = 1min 2.511s
graphical.target reached after 51.628s in userspace
systemd-analyze critical-chain
graphical.target @51.628s
└─multi-user.target @51.627s
└─snapd.seeded.service @51.192s +434ms
└─snapd.service @34.035s +17.152s
└─basic.target @33.455s
└─sockets.target @33.454s
└─snapd.socket @33.452s +2ms
└─sysinit.target @33.348s
└─snapd.apparmor.service @31.992s +1.355s
└─apparmor.service @30.267s +1.663s
└─local-fs.target @30.265s
└─boot-efi.mount @30.133s +131ms
└─systemd-fsck@dev-disk-by\x2duuid-67EC\x2dEF24.service @29.846s >
└─dev-disk-by\x2duuid-67EC\x2dEF24.device @29.844s
lines 1-17/17 (END)
result of df -h
df -h
Filesystem Size Used Avail Use% Mounted on
udev 3.4G 0 3.4G 0% /dev
tmpfs 690M 9.8M 680M 2% /run
/dev/sda7 313G 91G 206G 31% /
tmpfs 3.4G 0 3.4G 0% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 3.4G 0 3.4G 0% /sys/fs/cgroup
/dev/loop1 965M 965M 0 100% /snap/android-studio/115
/dev/loop6 62M 62M 0 100% /snap/core20/1270
/dev/loop4 56M 56M 0 100% /snap/core18/2128
/dev/loop5 56M 56M 0 100% /snap/core18/2253
/dev/loop2 218M 218M 0 100% /snap/code/85
/dev/loop3 100M 100M 0 100% /snap/core/11993
/dev/loop0 128K 128K 0 100% /snap/bare/5
/dev/loop8 148M 148M 0 100% /snap/figma-linux/149
/dev/loop7 6.4M 6.4M 0 100% /snap/curl/623
/dev/loop9 153M 153M 0 100% /snap/firefox/777
/dev/loop10 200M 200M 0 100% /snap/flutter/111
/dev/loop11 392M 392M 0 100% /snap/gimp/383
/dev/loop12 219M 219M 0 100% /snap/gnome-3-34-1804/72
/dev/loop13 165M 165M 0 100% /snap/gnome-3-28-1804/161
/dev/loop14 66M 66M 0 100% /snap/gtk-common-themes/1519
/dev/loop17 259M 259M 0 100% /snap/qt551/39
/dev/loop16 219M 219M 0 100% /snap/gnome-3-34-1804/77
/dev/loop19 44M 44M 0 100% /snap/snapd/14295
/dev/loop15 55M 55M 0 100% /snap/snap-store/558
/dev/loop18 248M 248M 0 100% /snap/gnome-3-38-2004/87
/dev/loop20 33M 33M 0 100% /snap/snapd/12704
/dev/loop23 51M 51M 0 100% /snap/snap-store/547
/dev/loop22 66M 66M 0 100% /snap/gtk-common-themes/1515
/dev/loop21 109M 109M 0 100% /snap/norka/141
/dev/sda6 511M 4.0K 511M 1% /boot/efi
tmpfs 690M 20K 690M 1% /run/user/1000
