Created attachment 730937 [details]
journalctl -b

I suggested to try bootchart

I installed 'bootchart' package.

I added kernel options:
initcall_debug printk.time=y quiet init=/usr/sbin/bootchartd
rdinitrd=/usr/sbin/bootchartd 

But it 


# journalctl -b | grep bootchart
Lie 01 13:05:27 linux-i0k3 kernel: Command line:
BOOT_IMAGE=/boot/vmlinuz-4.4.71-1-default
root=UUID=39863d49-4338-4a45-bfa0-7f8e234e24bf resume=/dev/sda1 splash=silent
quiet showopts initcall_debug printk.time=y quiet init=/usr/sbin/bootchartd
rdinitrd=/usr/sbin/bootchartd
Lie 01 13:05:27 linux-i0k3 kernel: Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.4.71-1-default
root=UUID=39863d49-4338-4a45-bfa0-7f8e234e24bf resume=/dev/sda1 splash=silent
quiet showopts initcall_debug printk.time=y quiet init=/usr/sbin/bootchartd
rdinitrd=/usr/sbin/bootchartd
Lie 01 13:05:27 linux-i0k3 dracut-cmdline[90]: Using kernel command line
parameters: resume=UUID=844491c4-3687-462a-8833-4e57ddf8a7e8
root=UUID=39863d49-4338-4a45-bfa0-7f8e234e24bf rootfstype=btrfs
rootflags=rw,relatime,space_cache,subvolid=259,subvol=/@/.snapshots/1/snapshot,subvol=@/.snapshots/1/snapshot
BOOT_IMAGE=/boot/vmlinuz-4.4.71-1-default
root=UUID=39863d49-4338-4a45-bfa0-7f8e234e24bf resume=/dev/sda1 splash=silent
quiet showopts initcall_debug printk.time=y quiet init=/usr/sbin/bootchartd
rdinitrd=/usr/sbin/bootchartd
Lie 01 13:05:34 linux-i0k3 kernel: bootchartd: 20 output lines suppressed due
to ratelimiting
Lie 01 13:05:34 linux-i0k3 unknown: bootchart continuing boot



See also another comment in 2015:
https://forums.opensuse.org/showthread.php/506357-Bootchart-Not-Working-Properly