Hi *, I've been testing how the boot time can be improved, this time with the help module-init-tools 3.5[1] which has some performances changes. I have not teste with a newer udev because I haven't seen performances changes since the version in Debian. And here are the results[2]
For the testing kernel (2.6.26-1-686): module-init-tools [ time ] 3.4 [ 22.236454] 3.5 [ 16.819960] 3.5 + depmod [ 14.813826] as you can see just upgrading to 3.5 the boot times decrease 5.5 seconds, with 5 additional seconds when using binary dep files (rerunning depmod). So in total we gain 7.5 seconds just upgrading to 3.5. The same with 2.6.28-rc5 (everything builtin, no initrd, + a patch to no longer need the pciehp): notes [ time ] [ w/o pre-dev] coldplug [ 16.112153] [ 15.963127] usb and input coldplug [ 12.173776] m-i-t=3.5 coldplug [ 12.883749] above + depmod [ 9.342581] [ 9.190434] As you can see there is also a big improvement (6.5 seconds) and in fact a prepopulated /dev (in /lib/dev/devices) is slower than a normal one. Also notice that the difference between all modules and all builtin is about 5 seconds (although it should be test with the same kernel version...) HTH, Santi [1] I've compiled the 3.5 locally, just with the upstream tarball, + the debian diff for 3.4-1. [2] I measure the time until one of the init.d scripts is executed, in particular avahi because it throws a warning in the dmesg output. Also notice that this is on top of other performances changes already explained in other post in this list and the wiki. _______________________________________________ Debian-eeepc-devel mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/debian-eeepc-devel
