Slow shutdown In Fedora 16

[chrismurphy]

Seems to hang the longest on 'sending SIGTERM to remaining processes' with a much shorter pause on 'sending SIGKILL'. And then a couple of seconds unmounting everything. But the SIGTERM hang for me can be anywhere from 5 to 30+ seconds.

So it sounds like it might be some wayward process that's not responding to SIGTERM.

[KitchiRUs]

I seem to have this problem too, on F16 64-bit. Looking at an earlier suggestion, it could be the kernel. When I was on 2.x something, it seemed to shutdown well (as far as I remember), but now on 3.x, not really.

My problem is not solely with shutdown, which hangs sometimes, but with reboots, which hang almost all the time. (I say hang, because after about a minute of waiting, I just hold the power button to power off.)

[chrismurphy]

Originally Posted by KitchiRUs

(I say hang, because after about a minute of waiting, I just hold the power button to power off.)

That's a bad idea. The last thing that happens is file system unmounting, so if you're powering off before that happens, you end up with a dirty file system which means your startups are going to be delayed.

I consistently have fast reboots when booted in recovery. So I think there is a process (kernel or otherwise) that's causing the delayed reboots.

[DBelton]

try finding out where it hangs by getting some better log messages on shutdown

add these parameters to your kernel line:

systemd.log_level=debug systemd.log_target=kmsg

Then create a shutdown script and place it in your /lib/systemd/system-shutdown folder (be sure to mark it as executable +x)

#!/bin/sh
mount / -orw,remount
dmesg > /dmesg.shutdown
mount / -oro,remount

shutdown and wait for the system to hang, then when you reboot, you should have better log messages either in your /var/log/messages or in the file you created with the shutdown script.

[RupertPupkin]

I haven't noticed any slow shutdowns in F16, for any of the kernels; it takes about 10 seconds for me. I don't have a lot of services running, so I'd suspect that might be the difference. systemd still seems pretty unpolished to me, so I wouldn't be surprised if it's getting confused by all the services that most users (especially if they run GNOME) have enabled, which is funny because that was supposedly one of the reasons systemd was developed (and forced on us starting with F15).

[Mariusz W]

Originally Posted by chrismurphy

Seems to hang the longest on 'sending SIGTERM to remaining processes' with a much shorter pause on 'sending SIGKILL'. And then a couple of seconds unmounting everything. But the SIGTERM hang for me can be anywhere from 5 to 30+ seconds.

So it sounds like it might be some wayward process that's not responding to SIGTERM.

Same here, on a 32 bit Fedora 16 which I keep fully updated: 'sending SIGTERM to remaining processes' is where the shutdown often likes to sit waiting. This happens regularly but not always. The computer is a Toshiba NB205 netbook with Intel(R) Atom(TM) CPU N280 @ 1.66GHz.

[spskhokhar]

i'm also facing same problem with fedora 16 gnome x86_64 on dell vostro 1510, intel core2duo T5870 @ 2.00 GHz.
Majority of times it hang, but some time it shutdown perfectly. The problem is not persistent.

[PoHandle]

I am experiencing this problem consistently. However, I've noticed that if I drop to runlevel 3 and issue the 'shutdown -p now' command, the system shuts down at normal speed.

[Dutchy]

It was gone for a while but with the latest stable kernel my box stalled once again while shutting down.

[cheerio158]

Originally Posted by Dutchy

It was gone for a while but with the latest stable kernel my box stalled once again while shutting down.

Me too! (kernel-3.3.5-2.fc16.x86_64)

Originally Posted by PoHandle

I am experiencing this problem consistently. However, I've noticed that if I drop to runlevel 3 and issue the 'shutdown -p now' command, the system shuts down at normal speed.

This didn't work for me.

I tampered with the "complex and (WTF!?) wonderful systemd" to add a script to clean out /tmp and /var/tmp at shutdown and thought my woes might be caused that. However, after undoing this, I still get persistent hanging upon shutdown.

I've noticed this problem occasionally for as long as I have been on F16 but now it is consistent.

I'll be switching to F17 as soon as it is released.