Hi,
These are based on Fedora-Workstation-Live-x86_64-33-20200828.n.0.iso
in a VM. The numbers are different on bare metal but correlate.
The only standout is rngd.service. That's a pretty big single hit,
percentage wise. And I don't know if we even need it anymore. Among
the rest, perhaps atd.service and crond.service could be disabled by
default on new installations, in favor of systemd timers.
Startup finished in 1.320s (kernel) + 1.344s (initrd) + 7.727s
(userspace) = 10.392s
disable atd.service
Startup finished in 1.308s (kernel) + 1.310s (initrd) + 7.557s
(userspace) = 10.176s
disable dbxtool.service
Startup finished in 1.302s (kernel) + 1.291s (initrd) + 7.527s
(userspace) = 10.120s
disable import-state.service
Startup finished in 1.308s (kernel) + 1.326s (initrd) + 7.410s
(userspace) = 10.044s
disable iscsi.service
Startup finished in 1.316s (kernel) + 1.303s (initrd) + 7.177s
(userspace) = 9.797s
disable libvirtd.service
Startup finished in 1.316s (kernel) + 1.266s (initrd) + 6.779s
(userspace) = 9.361s
disable lvm2-monitor.service
Startup finished in 1.315s (kernel) + 1.323s (initrd) + 6.750s
(userspace) = 9.389s
disable mdmonitor.service
Startup finished in 1.316s (kernel) + 1.350s (initrd) + 6.675s
(userspace) = 9.342s
disable ModemManager.service
Startup finished in 1.270s (kernel) + 1.305s (initrd) + 7.052s
(userspace) = 9.629s
disable nfs-convert.service
Startup finished in 1.312s (kernel) + 1.343s (initrd) + 6.958s
(userspace) = 9.614s
disable rngd.service
Startup finished in 1.308s (kernel) + 1.277s (initrd) + 5.247s
(userspace) = 7.833s
disable switcheroo-control.service
Startup finished in 1.308s (kernel) + 1.334s (initrd) + 5.223s
(userspace) = 7.867s
disable vboxservice.service
Startup finished in 1.301s (kernel) + 1.302s (initrd) + 5.176s
(userspace) = 7.780s
disable crond.service
Startup finished in 1.310s (kernel) + 1.278s (initrd) + 5.076s
(userspace) = 7.665s
preset-all
Startup finished in 1.316s (kernel) + 1.312s (initrd) + 7.869s
(userspace) = 10.498s ##stopwatch 11.35
disable atd.service crond.service iscsi.service rngd.service vboxservice.service
Startup finished in 1.305s (kernel) + 1.294s (initrd) + 5.505s
(userspace) = 8.105s ##stopwatch 8.89
All of these times are based on 'systemd-analyze'. The stopwatch
method is less precise but still demonstrates the difference is real.
It may not be a big enough deal to do anything about it this cycle,
but could be something to look at for the next. Maybe more
opportunities are available.
--
Chris Murphy