Boot-time improvements

Marius Gedminas marius at
Thu Sep 11 19:16:49 UTC 2008

On Thu, Sep 11, 2008 at 02:43:42PM -0400, Mackenzie Morgan wrote:
> On Thu, 2008-09-11 at 12:57 +0200, Krzysztof Lichota wrote:
> > That's what have been done by Microsoft for XP - they had the goal to
> > bring boot time to 30s and managed to do it. Apparently they forgot to
> > do the same for Vista ;)
> But as mentioned before, they did it by shoving off a bunch of the stuff
> til after the desktop shows so that it's unusable for a few minutes
> after login while the hard drive churns away.
> And 30s is considered bringing it down?  Wow, how long was it before?
> Is there a goal we have for boot time?  30s seems about average for boot
> time right now.  At least, all of my laptops boot in 25-35 seconds.

My laptop's (a year-old Lenovo T61) boot time varies between 0:46 and
1:28, according to /var/log/bootchart.  The usual time is around 1:00,
and the differences are mostly due to services I had enabled at one or
another time (apache2, samba, mysql).

There are some outliers (13 minutes) that, I think, indicate a bug in
bootchart.  (I think it keeps generating the chart until I log in via
GDM.  If I let the laptop sit idly for more than 15 minutes at the
login screen, it eats multiple gigs of RAM and hours of CPU time trying
to render the monstrous svg:

GNOME login time annoys me more than boot time.  It takes ~35 seconds,
during which the disk is busy doing I/O.

Marius Gedminas
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