Mateusz Marzantowicz wrote: > On 30.11.2013 00:10, Frantisek Hanzlik wrote: >> Mateusz Marzantowicz wrote: >>> On 29.11.2013 20:41, Frantisek Hanzlik wrote: >>>> On my Fedora 19 i686 I see weird thing - when killing processes (by >>>> commands as: >>>> >>>> killall -9 kactivitymanagerd >>>> killall -9 gam_server >>>> killall -9 kded4 >>>> killall -9 systemd >>>> killall -9 atril >>>> >>>> or with PID: >>>> >>>> kill -9 1 1322 10612 10619 >>>> >>>> ), then processes stay running - they are not zombies (for PID=1 be >>>> zombie perhaps does not make sense), but eat CPU, occupy memory etc. >>>> I cannot say this behavior is always (I'm killing processes only when >>>> I need it), but I saw this several times, with last Fedora distros. >>>> >>>> It is bad glibc signal() implementation or what else? >>>> >>>> Regards, Franta Hanzlik >>> >>> http://unix.stackexchange.com/questions/5642/what-if-kill-9-does-not-work >>> >>> Mateusz Marzantowicz >> >> Thank for link, but I'm not a lot smarter. >> Maybe Linux immunize system init (PID 1) against SIGKILL (but I was >> working on Unices where SIGKILL to init caused clean & immediate >> system halt - kernel flush buffers, unmount FSs and halt machine), >> but what SIGKILL to other processes? I was killing them as root, and >> as I wrote before, they was not zombies and possibly nor in >> uninterruptible sleep - 'top' utility shows as they consumes eg. >> several or several tens percents CPU. >> Then, according to Your link, is only other possibility bad Linux >> kernel? >> > > Does it happen always regardless system load and ongoing IO operations? > It was mentioned in that article that the result of kill -9 might not be > immediate depending on what is occupying your kernel. > > Please also note, that you can't kill systemd (PID 1) on Linux because > it's init process and it doesn't have much sense. To reboot your system > 'properly' use shutdown/halt/reboot or systemctl command. Simply killing > init is not save this days. > > Mateusz Marzantowicz
Last time I did 'kill -9' was when I had freezed GUI, but it was possible remotely ssh'd to this machine and working on it. I tried kill some processes in hope that I can finish programs running in X. IMO on these Unices 'kill -9 1' was acting as 'halt -f' - when its man page is correct, it say: " Force immediate halt, power-off, reboot. Don't contact the init system. " Franta -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
