Linked by diegocg on Sun 13th May 2012 23:48 UTC
Linux Lennart Poettering, the author of systemd, has announced: "I just put a first version of a wiki document together that lists a couple of easy optimizations to get your boot times down to [less than] 2s. It also includes a list of suggested things to hack on to get even quicker boot-ups."
Thread beginning with comment 517981
To read all comments associated with this story, please click here.
Stupid ideas...
by Bill Shooter of Bul on Mon 14th May 2012 03:10 UTC
Bill Shooter of Bul
Member since:
2006-07-14

The number one suggestion is to not us LLVM.

Well, back ups are a gazillion times more important to me than boot time improvements, so no. Heck no.


Number two is also requires not using LLVM. So double heck no to that.

Number three is to not use SELinux. Triple heck no. Not reading any further.

Reply Score: 5

RE: Stupid ideas...
by nzgreen on Mon 14th May 2012 04:18 in reply to "Stupid ideas... "
nzgreen Member since:
2008-01-07

I think you mean LVM (Logical Volume Manager) not LLVM (Low Level Virtual Machine).

Reply Parent Score: 6

RE[2]: Stupid ideas...
by Bill Shooter of Bul on Mon 14th May 2012 13:53 in reply to "RE: Stupid ideas... "
Bill Shooter of Bul Member since:
2006-07-14

I think you mean LVM (Logical Volume Manager) not LLVM (Low Level Virtual Machine).


Late night eyes and brain didn't see the extra L my bad.

Reply Parent Score: 2

RE: Stupid ideas...
by gilboa on Mon 14th May 2012 08:01 in reply to "Stupid ideas... "
gilboa Member since:
2005-07-06

"Consider disabling SELinux and auditing. We recommend to leave SELinux on, for security reasons, but truth be told you can save 100ms of your boot if you disable it. Use selinux=0 on the kernel cmdline."

Ummm.

Reply Parent Score: 3

RE[2]: Stupid ideas...
by Morgan on Mon 14th May 2012 10:57 in reply to "RE: Stupid ideas... "
Morgan Member since:
2005-06-29

Hey, I can do a lot in 100ms! I could literally blink in that huge window of time, or I could have a fleeting thought, why I could even scan halfway across my screen with my eyes!

Sarcasm aside, I don't use SELinux myself as I'm not that paranoid about security. My router's firewall has never been breached (in fact I've tried to get through it myself while at work, to no avail), and I also use iptables on the computer itself. So I'll be able to blink at least one more time during boot! ;)

Reply Parent Score: 3

RE[2]: Stupid ideas...
by Bill Shooter of Bul on Mon 14th May 2012 13:55 in reply to "RE: Stupid ideas... "
Bill Shooter of Bul Member since:
2006-07-14

Yeah, so why was it suggestion #3 on how to improve your boot time, if they themselves said it was a bad idea?

I mean you could eliminate the time wait time altogether, if you simply threw your computer into a river. You'd never wait for that particular computer to boot again!

Reply Parent Score: 3

RE: Stupid ideas...
by Delgarde on Tue 15th May 2012 01:55 in reply to "Stupid ideas... "
Delgarde Member since:
2008-08-19

The number one suggestion is to not us LLVM.

Well, back ups are a gazillion times more important to me than boot time improvements, so no. Heck no.


Number two is also requires not using LLVM. So double heck no to that.


Did you notice that the article is mostly about configuring systemd for appliance-type hardware, not for a desktop or server?

This is for an environment where a) hardware is a constant and so modules aren't required, and b) the root partition is going to be on a simple disk setup, probably an SSD. In that environment, neither LVM nor initrd are required.

Again, this is *not* about your personal desktop machine or laptop.

Reply Parent Score: 4