Testing fast parallell boot with Debian?
pere at hungry.com
Tue Apr 4 20:40:42 UTC 2006
Here is a summary on what to do to test parallel booting with
- Install the bootchart package to get a graph of the boot process.
Do a test boot passing init=/sbin/bootchartd to the kernel during
boot to activate it.
- Edit /etc/default/rcS, insert CONCURRENCY=startpar to enable
parallel init.d script execution with serialized output.
- Install the insserv package, run update-bootsystem-insserv to
reorder the boot scripts for maximum parallel execution based on
dependency information. Review the order in /etc/rc*.d/ to check
that it look sane. This step can be undone using
- Edit /etc/default/rcS, switching DELAYLOGIN from yes to no, and
thus allow kdm/gdm/xdm to log in users while the machine boots in
There are also a few tests I have not tried myself:
- Install the preload package to enable readahead at the end of
rc2.d/. Not sure if this will speed up the boot or not.
- Install the readahead package from Ubuntu,
files to load should probably be adjusted for Debian, but it might
speed up the boot nontheless.
Does this work for anyone else but me?
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