Many zombies processes

Alex · March 2019

After update to version 2.52 i have many Zombie processes.

[root@stor2rrd ~]# for pid in $(ps axo pid=,stat= | awk '$2~/^Z/ { print $1 }') ; do pstree -p -a -s -A "$pid" ; done

systemd,1 --switched-root --system --deserialize 22

`-perl,1874 -w /home/stor2rrd/stor2rrd/bin/svcperf.pl SW3700_bkp_second

`-(ssh,17256)

systemd,1 --switched-root --system --deserialize 22

`-perl,1586 -w /home/stor2rrd/stor2rrd/bin/svcperf.pl SW5000_NB_main

`-(ssh,17307)

systemd,1 --switched-root --system --deserialize 22

`-perl,1607 -w /home/stor2rrd/stor2rrd/bin/svcperf.pl SW5000_NB_second

`-(ssh,17444)

systemd,1 --switched-root --system --deserialize 22

`-perl,1533 -w /home/stor2rrd/stor2rrd/bin/svcperf.pl SW5030_DB_second

`-(ssh,17564)

systemd,1 --switched-root --system --deserialize 22

`-perl,16491 -w /home/lpar2rrd/lpar2rrd/bin/lpar2rrd-daemon.pl

`-(perl,17851)

Pavel · March 2019

Hi,

this output:

date

ps -ef| grep defunct

Alex · March 2019

This server with OS CentOS 7.6 is virtual.
I add vProcessors (x2, summary 8 vCPU), but it not effect.

Alex · March 2019

[root@stor2rrd /]# date

Mon Mar 25 15:26:39 MSK 2019

[root@stor2rrd /]# ps -ef| grep defunct

stor2rrd 520 1874 0 15:26 ? 00:00:00 [ssh] <defunct>

stor2rrd 531 1650 0 15:26 ? 00:00:00 [ssh] <defunct>

stor2rrd 551 1586 0 15:26 ? 00:00:00 [ssh] <defunct>

root 574 28752 0 15:26 pts/3 00:00:00 grep --color=auto defunct

stor2rrd 28902 1533 0 15:24 ? 00:00:00 [ssh] <defunct>

stor2rrd 31981 1646 0 15:25 ? 00:00:00 [ssh] <defunct>

stor2rrd 32076 1826 0 15:25 ? 00:00:00 [ssh] <defunct>

lpar2rrd 32551 16491 1 15:26 ? 00:00:00 [perl] <defunct>

Pavel · March 2019

they will disapper, it is not a problem.

it is just a record in the process table it does not spend any resources.

Alex · March 2019

Yes, Pavel. Oldest is killed OS, but born new.
Just for info.
Nagios spam me warning mail every 3-5 minutes. Somthing changed in new version.

Pavel · March 2019

change nagios tresholds

they is not killed by the OS, they disapper after their parents exit. defunct cannot be killed, it is not a proces in fact.

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