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How to speed up boot of Ubuntu 10.04 Lucid Lynx

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By Dipin Krishna
Use profiling to speed up boot.
By using profile, a profile of your boot is kept to make your next boot faster.
After a couple of boots, a better profile would be ready for your machine.

Follow the steps below for that:
1. Edit your grub 
$ sudo gedit /etc/default/grub
You can find the lines




GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release  -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet profile"
GRUB_CMDLINE_LINUX=""
 
add profile to the line GRUB_CMDLINE_LINUX_DEFAULT="quiet" as shown above.

2. Now Update your grub2.
Type this in your terminal




sudo update-grub2

3. Reboot.

4. Now edit the grub once again and remove the word profile that we added. Update grub(sudo update-grub2) and then reboot.
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Comments

Anonymous said…
My grub looks like this:

GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=3
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=" splash quiet"

Where should the "profile" be added?chrusti
July 6, 2010 at 7:33 AM
Les phrases en l'air said…
I don't understand this line :
"add profile as shown"
Is it a line to type at the end of the grub cfg file, or a command line....?

thx
July 6, 2010 at 11:54 AM
Lobo said…
could you explain how this works?
July 7, 2010 at 12:53 AM
Anonymous said…
After step 4 ... is it required to sudo update-grub2 again ?

Thanks.
July 7, 2010 at 10:56 AM
Dipin Krishna said…
yes it is required to update grub again.
July 7, 2010 at 11:24 AM
Dipin Krishna said…
when u boot linux with "profile" option, a profile of your boot i.e the drivers that should actually be loaded(rather than searching for the drivers) and many other things are made. So the next time you boot the profile is used to load your kernel rather than search for the drivers etc.
July 7, 2010 at 11:26 AM
Anonymous said…
Very interesting post. I have one question after your explanation. If we update some software ( a new kernel version from Ubuntu repositories, a startup application, a new Nvidia driver, this kind of things ... ) . Acording to optimize the performance, should we repeat the operation of profiling againg ?

Thanks a lot.
July 7, 2010 at 2:00 PM
Aditya Pratap V. said…
Thank you for this informative post! I was actually looking out for ways to further speed up the boot process in Lucid Lynx when I hit upon this post.
July 7, 2010 at 8:58 PM
Anonymous said…
Awesome! Thanks for sharing.
July 8, 2010 at 8:55 AM
Dipin Krishna said…
@Andre,
Add profile to the line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

It should be like this now:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash profile"
July 8, 2010 at 11:16 AM
Unknown said…
Dipin

Excellent article. Worked great, sped up my boot noticeably. I had done this with a previous Ubuntu on different hardware and was very happy with what it did. So I thought I would do it again on my new hardware. Worked so well that now my machine tries to load the login before the Nvidia driver has finished initializing.

So the only thing that comes up is the select low resolution screen. I tried reconfiguring and ultimately gave up and after about the sixth try just went through it to the CLI login. After logging in I ran the 'startx" command and voila! Working fine!
So now I log in in CLI after bypassing the Low-resolution option screen.

I think I'd like to reverse this, is there any way to get rid of the "profile" changes?

Again, great article, my problem is caused by the speed of my SSD boot disk.
July 15, 2010 at 11:57 PM
mayamax said…
I am going to try it on my machine now. Thanks for the tips
July 22, 2010 at 10:33 PM
Anonymous said…
Tried this but I don't see a noticeable speedup.
September 24, 2010 at 4:16 PM
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