Le Tue, 04 Apr 2006 22:40:42 +0200, Petter Reinholdtsen <[EMAIL PROTECTED]> a _crit :
> > Here is a summary on what to do to test parallel booting with > Debian/unstable. > > - 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 > 'update-bootsystem-insserv restore' > > - 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 > the background. > > 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, > <URL:ftp://ftp.ubuntu.com/ubuntu/pool/main/r/readahead/>. The > 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? > > Friendly, Hi, I just try your tips, to see if it changes something on my machine. You can find the different bootcharts on http://multani.info/debian/bootchart/ As you can see, my boot time is pretty high (:p), and using all of the tips you provided didn't do anything (at least, it seems) I (very) briefly explain what change between each chart in the url given above : - the first one show "normal" boot, without doing any kind of optimisation - in the second one, I added "quiet" to the boot command line. I use framebuffer, and i noticed that it takes some time to display a lot of text. In this case, I wanted to see if hiding all the text which is displayed at boot speed up it a little bit ... - on the third one, I added the "startpar" option - on the fourth, I sue the update-bootsystem-insserv script (which move all my link in /etc/rc5 to lower starting numbers ; they were from 10 to 99 before, now, they are from 0 to 20) - on the fifth, I move the preload startup link to be the first to be run after switching to init 5. I should add that in the first test, it seems that ntpdate script was slower than usual (maybe 5+ sec. instead of 1+ sec.) I think the beast here is checking and mounting filesystems. From this point of view, reseirfs doesn't play very well (at all) Dhcp configuration is quite slow too ... Voilà, I hope it could be useful ... Feel free to ask if you have questions. Regards, Jonathan _______________________________________________ initscripts-ng-devel mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/initscripts-ng-devel
