On Tue, 10.05.11 17:34, Koen Kooi (k...@dominion.thruhere.net) wrote: > > > Op 10 mei 2011, om 14:14 heeft Lennart Poettering het volgende geschreven: > > > On Tue, 10.05.11 14:11, Harald Hoyer (harald.ho...@gmail.com) wrote: > > > >> > >> Am 10.05.2011 14:09, schrieb Lennart Poettering: > >>> On Tue, 10.05.11 13:47, Koen Kooi (k...@dominion.thruhere.net) wrote: > >>> > >>>>> What udev version is that? I'm running current -git, maybe something > >>>>> was broken, don't know it though. > >>>> > >>>> [ 122.891967]<27>udevd[88]: unable to receive ctrl connection: Function > >>>> not implemented > >>>> > >>>> Time to rebuild eglibc I guess. > >>> > >>> Hmm, does your kernel lack AF_UNIX/SOCK_SEQPACKET support? > >>> > >>> Lennart > >>> > >> > >> Might be time, for a .config list of required features :-) > > > > Neither accept4 nor AF_UNIX/SOCK_SEQPACKET are optional kernel > > features. However, they are relatively new kernel features and some > > archs had trouble keeping up in enabling them even though the code > > exists in the kernel. > > > > Currently our README mentions that we need kernel >= 2.6.30. It might > > make sense to include another line mentioning that on ARM/MIPS/others > > you need an even newer one. > > So after rebuilding eglibc against 2.6.37 headers and udev from git: > > root@beagleboard-systemd:~# time ( udevadm trigger ; udevadm settle ) > > real 0m10.475s > user 0m0.000s > sys 0m0.133s > > And the matching systemd-analyze plot: > http://dominion.thruhere.net/koen/angstrom/systemd/git-with-accept4.svg
Seems the triggering takes a about a second. Which is not particularly good, but I guess not the most pressing issue. It seems the devices are probed very slowly, and even the tty devices take ages to complete. i.e. between most VC tts to showing up almost a second passes. Might be useful to run bootchart on this to get a more finegrained idea what udev is doing there. Lennart -- Lennart Poettering - Red Hat, Inc. _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
