From: John Stoffel <john@stoffel.org>
To: Worcester Linux Users Group <wlug@mail.wlug.org>
Sent: Thursday, February 12, 2009 10:14:21 AM
Subject: Re: [Wlug] Lenovo S10 Netbook
>>>>> "Mike" == Mike Leo <
mleo963@yahoo.com> writes:
Mike> Short of compiling my own kernel (which I never can seem to do
Mike> right), any other advise on how to speed up a netbook's boot
Mike> time?
I suspect that your boot time is spent in udev and module loading
stuff. There's a bunch of work in the linux kernel with a tool called
'bootchart' which tracks how stuff boots up.
With 8.10, it's trivial to drop in a new kernel. Also, if you compile
in all the modules your need on bootup, and minimize the modules you
have otherwise (say for USB devices, etc) then you should see a speed
up.
Do an 'lsmod' and see which modules you have loaded. Then go and grab
the latest linux kernel (2.6.29-rc4 say...) and compile it using the
*exact* same config from your 8.10 kernel.
Test it out, using the 'mkinitrd' script to rebuild your initrd for
loading. Update grub with the new info and reboot. See if it's
faster. And if it boots properly
If it does, then go back into the config under the new kernel and
start moving more stuff into the kernel image, and putting less stuff
into modules. Rebuild and boot. See how it goes.
Also, I'd go through and see which software packages are installed and
starting up daemons and I'd nuke as many of them as you can. Maybe
ntpd doesn't need to run, or avahi or some other funky stuff. Like
bluez, etc.
It's hard to say what will and won't work, but getting the kernel and
device initialization to be as parallel as possible will help boot
times. Also, check out the 'moblin' project from Intel, they've been
working on making netbooks boot faster
too.
John
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