Boot Time and new Kernels

[solo2101]

Has anyone notice that with each kernel update the boot time increases?
do we know the why?

[marko]

try:

systemd-analyze blame

to see what amount of time is used by each boot stage

[solo2101]

im using

dmesg

very detailed log...

[marko]

I see what you mean , I just updated to kernel 3.3.1-5 from 3.3.1-3 and my systemd-analyze time went from 29 to 38 seconds

UPDATE -- did another reboot, so this is 2nd boot with the 3.3.1-5 kernel on this hardware

http://www.smolts.org/client/show/pu...4-803808563ae3

this time I got 26 seconds from "systemd-analyze"

{2012-04-14 Sat 20:19:13}[3448] systemd-analyze
Startup finished in 2155ms (kernel) + 3924ms (initramfs) + 20239ms (userspace) = 26319ms

and about 30 seconds (using my watch to time from the grub screen to my seeing the kdm login manager)

so I guess that 38 second one was a fluke (maybe the very first time you boot a new kernel some set up is done that's extra work?)

[StephenH]

Do you have akmods building anything like kmod-nvidia or kmod-wl? That could very well explain the additional time needed the first time a new kernel is booted.

[solo2101]

Originally Posted by StephenH

Do you have akmods building anything like kmod-nvidia or kmod-wl? That could very well explain the additional time needed the first time a new kernel is booted.

no just the cd live install