Booting Fedora 17 In Less Than Three Seconds

[mmix]

http://www.phoronix.com/scan.php?pag...tem&px=MTExMDc

http://www.harald-hoyer.de/personal/...5-to-3-seconds

It's possible to optimize the Fedora 17 boot process to boot the system in less than three seconds. One developer went from a boot time of 15 seconds down to just 2.5 seconds.

[DBelton]

yes, he possibly did speed up his boot time, but he now has a wide open system that could be compromised that really does nothing except start a desktop, and screw up the IRQ balancing on a SMP system.

I will now turn off all services except NetworkManager. The result will be a Linux system without mail, firewall, printing, the abrt tools, avahi, some mountpoints, rsyslog, irqbalance, and selinux security.

[SlowJet]

Hurd about 10 years ago.

I think I read somewhere that some Hurd parts was going to be used in some new feature.

Away, he has a nice thin cloud client.
He just can't access the cloud.

SJ

[DBelton]

He also missed a big pig. He kept Network Manager instead of disabling it and using network.

[nonamedotc]

And this also requires that you do not use encrypted partitions (freedesktop systemd page mentioned encrypted /home is O.K) ....

Sendmail service takes too long to start anyway! Better disabled but I don't know why one would remove IRQ balance! Anyway, without being so vigorous, it is still possible to get reasonably fast boot-times I guess.

[DBelton]

I do agree there.

There are numerous services one can disable to get a faster boot time that are enabled by default but all systems don't need. But to go in and disable some of the things he did in the article was just plain crazy

And yep, sendmail is one of the first things I disable on my system after an install.

[mmix]

http://freedesktop.org/wiki/Software.../Optimizations

[secipolla]

Hi, just to clarify.
I'm not using LVM nor RAID. Does that mean that I could disable the fedora-storage services?

$ systemctl list-units
(snip)
fedora-storage-init-late.service                           loaded active exited        Initialize storage subsystems (RAID, LVM, etc.)
fedora-storage-init.service                                loaded active exited        Initialize storage subsystems (RAID, LVM, etc.)
fedora-wait-storage.service                                loaded active exited        Wait for storage scan
(snip)

[sea]

If you can... yes you can disable them.

[Mariusz W]

What I find really impressive is that shutdown now takes something like 3 seconds (!)

[secipolla]

Originally Posted by sea

If you can... yes you can disable them.

Thanks, but I think I can't. Although I don't use LVM and RAID, I have encrypted swap and /home and I think those services are needed for that.

[sea]

Originally Posted by secipolla

Thanks, but I think I can't. Although I don't use LVM and RAID, I have encrypted swap and /home and I think those services are needed for that.

If there was an answer in my post, we would know.
On my netbook i have encryption too (/home, swap), and i ran my script to disable these services (scsi, lvm, mdm,etc), but they just come back, if not on first reboot then on 2nd.