zombie process is increased

[zoneofjin]

I use fluend-ui

Started with the following command:

[root@localhost ~]# fluentd-ui start

When the fluentd start in Dashbard web,
zombie process is increased.

[root@localhost ~]# ps aux | grep ruby

root 5541 8.2 0.0 0 0 pts/1 Z+ 14:22 0:00 [ruby]
root 5541 1.0 0.0 0 0 pts/1 Z+ 14:22 0:00 [ruby]
root 5593 2.7 0.0 0 0 pts/1 Z+ 14:23 0:00 [ruby]

Please let me know the reason why it occurs.

[zoneofjin]

• CentOS 6.5
• ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux]

[uu59]

I've confirmed that.

I've run fluentd-ui start with ruby 2.2.0p0/CentOS 6.5 on this AMI, then "start" and "stop" some times from Dashboard. Then processes are as below:

[root@ip-10-120-88-237 ~]# ps afux|grep ruby
root      1514  1.2  3.1 204968 18896 pts/0    Sl+  08:11   0:00  |       \_ /root/.rbenv/versions/2.2.0/bin/ruby /root/.rbenv/versions/2.2.0/bin/fluentd-ui start
root      1543 30.4 21.9 847720 132848 pts/0   Sl+  08:11   0:12  |           \_ /root/.rbenv/versions/2.2.0/bin/ruby /root/.rbenv/versions/2.2.0/bin/rackup  --pid /root/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/fluentd-ui-0.3.16/tmp/fluentd-ui.pid -p 9292 -E production /root/.rbenv/versions/2.2.0/lib/ruby/gems/2.2.0/gems/fluentd-ui-0.3.16/config.ru
root      1644  0.0  0.1 103240   868 pts/1    S+   08:12   0:00          \_ grep ruby
root      1628  0.0  2.6 203436 15796 ?        Sl   08:12   0:00 /root/.rbenv/versions/2.2.0/bin/ruby /root/.rbenv/versions/2.2.0/bin/fluentd --use-v1-config -c /root/.fluentd-ui/fluent.conf -d /root/.fluentd-ui/fluent.pid -o /root/.fluentd-ui/fluent.log
root      1631  3.7  3.9 490216 23808 ?        Sl   08:12   0:00  \_ /root/.rbenv/versions/2.2.0/bin/ruby /root/.rbenv/versions/2.2.0/bin/fluentd --use-v1-config -c /root/.fluentd-ui/fluent.conf -d /root/.fluentd-ui/fluent.pid -o /root/.fluentd-ui/fluent.log
[root@ip-10-120-88-237 ~]# ps afux|grep Z
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root      1587  1.5  0.0      0     0 pts/0    Z+   08:12   0:00  |               \_ [fluentd] <defunct>
root      1622  2.2  0.0      0     0 pts/0    Z+   08:12   0:00  |               \_ [fluentd] <defunct>
root      1658  0.0  0.1 103240   868 pts/1    S+   08:12   0:00          \_ grep Z

these zombies are flushed after fluentd-ui stopped.

I'll investigate it deeply later, quickly thinking is that launching fluentd process problem.

[zoneofjin]

Thank you for your help. I just wonder when it can be solved?

[uu59]

I hope as soon as possible :)
Sorry for inconvenience

[yoshihara]

I fixed it by #166 and released v0.3.17. please try it :)