Re: [gentoo-user] new machine : start-up time

[Canek Peláez Valdés]

On Sat, Oct 13, 2012 at 3:40 PM, Canek Peláez Valdés <caneko@×××××.com> wrote:
> On Sat, Oct 13, 2012 at 3:24 PM, Philip Webb <purslow@××××××××.net> wrote:
>> Regulars will remember the threads re the machine I built recently.
>> I thought they mb interested in the start-up time now all is working :
>> Gigabyte BIOS  10 s , Linux Lilo prompt - login prompt  8 s ,
>> 'startx' - GUI ready  4 s : total  22 s  + entering userid+password ;
>> I start the I/net connection (Dhcpcd) manually from the GUI ( 15 s ).
>> I assume most of the speed is attributable to the SSD,
>> perhaps a bit to the 1600 MHz memory; of course, Gentoo shares the honors;
>> my desktop manager is Fluxbox & I start apps on desktops manually.
>
> Toshiba Portégé Z830, with an iCore 5 at 1.60GHz, 6 GB of memory, and
> a tiny 128 GB SSD. It takes 12 seconds from GRUB to GDM, and from the
> time I enter my password and my GNOME 3 desktop is ready it takes
> another 6 seconds, so 18 seconds in total (plus how much it takes for
> me to click in my user and enter my password).
>
> Like you, I attribute most of the speed gain to the SSD. The rest is systemd.

Damn, is GNOME fat. I booted to text console (disabled GDM), and I
also disabled plymouth. From GRUB2 to login prompt it takes less than
6 seconds, so the really slow part is starting GDM and then switching
to GNOME 3. The BIOS is pretty fast, it takes 4 seconds from power on
to the GRUB2 menu.

The fast part (GRUB2->login prompt) is because of systemd. GNOME 3
needs a lot of optimization, it seems. Also, plymouth slow things a
little, and it hides the login prompt, so it's difficult to measure
for how much. However, it's really pretty ;)

Regards.
-- 
Canek Peláez Valdés
Posgrado en Ciencia e Ingeniería de la Computación
Universidad Nacional Autónoma de México