PHP script killing system (/usr/local/opnsense/scripts/dhcp/prefixes.php)

[uglymotha]

What is this script doing exactly, and why is it consistently killing my system? The amount of process taking up 100% keeps increasing and I have to kill them hard and restart the webgui.

last pid: 81341;  load averages:  6.35,  6.13,  4.90                                                                                                                   up 1+18:53:05  11:01:04
108 processes: 8 running, 99 sleeping, 1 zombie
CPU: 90.3% user,  0.0% nice,  7.7% system,  0.5% interrupt,  1.5% idle
Mem: 935M Active, 4174M Inact, 2180M Wired, 1136M Buf, 9530M Free
Swap: 8192M Total, 8192M Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE    C   TIME    WCPU COMMAND
67960 root          1 100    0   180M   139M CPU5     5   6:10  99.03% php
15771 root          1  92    0   180M   139M CPU4     4   0:12  98.95% php
66050 root          1 102    0   180M   139M CPU1     1  10:09  98.93% php
 3542 root          1 102    0   180M   139M CPU2     2  14:17  98.38% php
40170 root          1 101    0   180M   139M CPU6     6  20:48  96.21% php
58530 root          1 101    0   180M   139M CPU0     0  16:40  95.19% php

ps aux |grep php
root       3542 100.0  0.9  184008 142104  -  R    10:46     14:59.09 /usr/local/bin/php /usr/local/opnsense/scripts/dhcp/prefixes.php
root      40170 100.0  0.9  184008 142104  -  R    10:39     21:29.53 /usr/local/bin/php /usr/local/opnsense/scripts/dhcp/prefixes.php
root      58530 100.0  0.9  184008 142108  -  R    10:44     17:22.13 /usr/local/bin/php /usr/local/opnsense/scripts/dhcp/prefixes.php
root      67960 100.0  0.9  184008 142108  -  R    10:54      6:51.40 /usr/local/bin/php /usr/local/opnsense/scripts/dhcp/prefixes.php
root      15771  99.6  0.9  184008 142116  -  R    11:00      0:53.80 /usr/local/bin/php /usr/local/opnsense/scripts/dhcp/prefixes.php
root      66050  99.4  0.9  184008 142100  -  R    10:50     10:51.01 /usr/local/bin/php /usr/local/opnsense/scripts/dhcp/prefixes.php

[uglymotha]

System info:
OPNsense 20.7.5-amd64
FreeBSD 12.1-RELEASE-p10-HBSD
OpenSSL 1.1.1h 22 Sep 2020

Intel(R) Atom(TM) CPU C2750 @ 2.40GHz (8 cores) / 16GB

[Remington]

Check the size of `/var/log/dhcpd.log` if it is to large the script will take to much CPU, as the script is parsing this file