I spent Monday and tuesday this week in London with a lot of the -people involved in the boot system on Debian and Ubuntu, to see if we -could find more ways to speed up the boot system. This was an Ubuntu -funded -developer -gathering. It was quite productive. We also discussed the future -of boot systems, and ways to handle the increasing number of boot -issues introduced by the Linux kernel becoming more and more -asynchronous and event base. The Ubuntu approach using udev and -upstart might be a good way forward. Time will show.
- -Anyway, there are a few ways at the moment to speed up the boot -process in Debian. All of these should be applied to get a quick -boot:
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- Use dash as /bin/sh. - -
- Disable the init.d/hwclock*.sh scripts and make sure the hardware - clock is in UTC. - -
- Install and activate the insserv package to enable - dependency - based boot sequencing, and enable concurrent booting. - -
Support for makefile-style concurrency during boot was uploaded to -unstable yesterday. When we tested it, we were able to cut 6 seconds -from the boot sequence. It depend on very correct dependency -declaration in all init.d scripts, so I expect us to find edge cases -where the dependences in some scripts are slightly wrong when we start -using this.
- -On our IRC channel for this effort, #pkg-sysvinit, a new idea was -introduced by Raphael Geissert today, one that could affect the -startup speed as well. Instead of starting some scripts concurrently -from rcS.d/ and another set of scripts from rc2.d/, it would be -possible to run a of them in the same process. A quick way to test -this would be to enable insserv and run 'mv /etc/rc2.d/S* /etc/rcS.d/; -insserv'. Will need to test if that work. :)
+The last few days I have been looking into the status of the LDAP +directory in Debian Edu, and in the process I started to miss a GUI +tool to browse the LDAP tree. The only one I was able to find in +Debian/Squeeze and Lenny is +LUMA, which has proved to +be a great tool to get a overview of the current LDAP directory +populated by default in Skolelinux. Thanks to it, I have been able to +find empty and obsolete subtrees, misplaced objects and duplicate +objects. It will be installed by default in Debian/Squeeze. If you +are working with LDAP, give it a go. :)
+ +I did notice one problem with it I have not had time to report to +the BTS yet. There is no .desktop file in the package, so the tool do +not show up in the Gnome and KDE menus, but only deep down in in the +Debian submenu in KDE. I hope that can be fixed before Squeeze is +released.
+ +I have not yet been able to get it to modify the tree yet. I would +like to move objects and remove subtrees directly in the GUI, but have +not found a way to do that with LUMA yet. So in the mean time, I use +ldapvi for that.
+ +If you have tips on other GUI tools for LDAP that might be useful +in Debian Edu, please contact us on debian-edu@lists.debian.org.