Boot time/memory comparison: sysvinit vs systemd
Posted: 2015-01-29 00:11
Debian jessie 7.8 with sysvinit and systemd installed.
Conclusion: same boot time to within wrist-watch accuracy (18sec), systemd used 3M more mem.
Memory measured with ps_mem.py (called 'mem'); I forgot to do "free -m"...
With systemd:
with sysvinit
Xorg could be made 20-30M smaller by using nouveau drivers rather than nvidia.
Conclusion: same boot time to within wrist-watch accuracy (18sec), systemd used 3M more mem.
Memory measured with ps_mem.py (called 'mem'); I forgot to do "free -m"...
With systemd:
Code: Select all
Boot time = 18sec (grub prompt to visible desktop)
$ systemd-analyze
Startup finished in 4.599s (kernel) + 6.528s (userspace) = 11.127s
(note the difference between 11s reported and 18s real boot time)
# mem
Private + Shared = RAM used Program
...snip...
1.3 MiB + 1.9 MiB = 3.2 MiB systemd (2)
3.5 MiB + 1.5 MiB = 5.0 MiB bash (3)
3.1 MiB + 2.1 MiB = 5.2 MiB fluxbox
7.3 MiB + 49.0 KiB = 7.3 MiB dhclient
11.3 MiB + 3.8 MiB = 15.1 MiB lxterminal
54.1 MiB + 821.0 KiB = 54.9 MiB Xorg
---------------------------------
112.9 MiB
#
Code: Select all
Boot time 18 sec. (grub prompt to visible desktop)
# mem
Private + Shared = RAM used Program
...snip...
1.2 MiB + 1.7 MiB = 2.9 MiB polkitd
3.6 MiB + 1.5 MiB = 5.0 MiB bash (3)
3.2 MiB + 2.1 MiB = 5.3 MiB fluxbox
7.3 MiB + 48.0 KiB = 7.4 MiB dhclient
11.5 MiB + 3.7 MiB = 15.3 MiB lxterminal
54.4 MiB + 836.0 KiB = 55.2 MiB Xorg
---------------------------------
109.3 MiB
#