Am 27.05.2015 um 23:38 schrieb Niels Thykier: > reassign 786942 systemd,udev > retitle 786942 systemd,udev: Long boot-time with systemd-udev-settle > thanks > > Dear systemd maintainers, > > I am reassigning this upgrade report to you, in the hopes that you can > solve it (or point us in the right direction). Please be sure to notify > me explicitly if you reassign it back to "upgrade-reports". > > Quick summary: > > * Karl (CC'ed) reported really long boot times (+10 minutes) after > upgrade. He had already found a work around by masking the service > systemd-udev-settle.service > * I advised Karl to purge acpid based on the recommendation in the > release-notes plus [archbug#43023], which suggested that acpid with > systemd-udev-settle.service caused this (and other) issue(s). > * Karl unmasked the service and purged acpid. The boot time is now > reasonable, but we still see two services with a questionable long > boot time: > - systemd-udev-settle.service: 18+ seconds
systemd-udev-settle is known to be slow, depending on the hardware/software configuration, it can take quite a bit of time until all uevents are processed. In case of Karl, it's being pulled in by nut. > - nut-driver.service: 11+ seconds What kind of hardware is this: CPU/RAM/HDD/SSD? Having a service take 11 seconds is not that unusual if other/multiple I/O intensive tasks are running during boot. I'm unsure what this bug report is supposed to be about. Is this about systemd-udev-settle being slow (not a bug imho) or acpid interacting badly with systemd-udev-settle.service, thus breaking the boot? Karl, can you re-enable both acpid and systemd-udev-settle, as it was after the upgrade, then boot with the following added to the kernel command line: systemd.debug-shell This will give you debug shell on tty9. Please switch there and provide the output of systemctl list-jobs, ps aux and journalctl -alb -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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