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Old 14th April 2012, 11:10 PM
solo2101 Offline
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Boot Time and new Kernels

Has anyone notice that with each kernel update the boot time increases?
do we know the why?
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  #2  
Old 14th April 2012, 11:20 PM
marko Offline
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Re: Boot Time and new Kernels

try:
Quote:

systemd-analyze blame
to see what amount of time is used by each boot stage
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  #3  
Old 14th April 2012, 11:52 PM
solo2101 Offline
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linuxfirefox
Re: Boot Time and new Kernels

im using
Code:
dmesg
very detailed log...
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  #4  
Old 15th April 2012, 01:15 AM
marko Offline
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Re: Boot Time and new Kernels

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"

Quote:
{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?)

Last edited by marko; 15th April 2012 at 01:23 AM.
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Old 15th April 2012, 02:09 AM
StephenH Offline
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Re: Boot Time and new Kernels

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.
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  #6  
Old 15th April 2012, 07:10 AM
solo2101 Offline
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Re: Boot Time and new Kernels

Quote:
Originally Posted by StephenH View Post
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
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