An updatedb process on my linux server is not responding to kill signals. (kill -9 or SIGSTOP)[root@chroot-1 ~]# ps auwx | grep -i 4505root      4505 99.5  0.0  59544  1256 ?        RN   09:43 112:04 /usr/bin/updatedb -f sysfs?rootfs?bdev?proc?cpuset?binfmt_misc?debugfs?securityfs?sockfs?usbfs?pipefs?anon_inodefs?futexfs?tmpfs?inotifyfs?eventpollfs?devpts?ramfs?hugetlbfs?mqueue?selinuxfs?rpc_pipefs?autofsroot      5727  0.0  0.0  61212   836 pts/2    S+   11:36   0:00 grep -i 4505[root@chroot-1 ~]# kill -9 4505[root@chroot-1 ~]# kill -9 4505[root@chroot-1 ~]# kill -9 4505[root@chroot-1 ~]# ps auwx | grep -i 4505root      4505 99.5  0.0  59544  1256 ?        RN   09:43 112:16 /usr/bin/updatedb -f sysfs?rootfs?bdev?proc?cpuset?binfmt_misc?debugfs?securityfs?sockfs?usbfs?pipefs?anon_inodefs?futexfs?tmpfs?inotifyfs?eventpollfs?devpts?ramfs?hugetlbfs?mqueue?selinuxfs?rpc_pipefs?autofsroot      5729  0.0  0.0  61212   840 pts/2    S+   11:36   0:00 grep -i 4505[root@chroot-1 ~]# kill -s SIGSTOP 4505[root@chroot-1 ~]# ps auwx | grep -i 4505root      4505 99.5  0.0  59544  1256 ?        RN   09:43 112:31 /usr/bin/updatedb -f sysfs?rootfs?bdev?proc?cpuset?binfmt_misc?debugfs?securityfs?sockfs?usbfs?pipefs?anon_inodefs?futexfs?tmpfs?inotifyfs?eventpollfs?devpts?ramfs?hugetlbfs?mqueue?selinuxfs?rpc_pipefs?autofsroot      5731  0.0  0.0  61212   840 pts/2    S+   11:36   0:00 grep -i 4505From top  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND   4505 root      34  19 59544 1256  548 R 100.0  0.0 108:49.08 updatedb                                                           Why is the process constantly in R state? Why is it not being context switched and moved to wait queue? Why is this process not responding to kill signals that cannot be handled(like SIGKILL or SIGSTOP)
CentOS Running process not responding to kill signals and not context switched
linux;centos;process;kill;signals