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CPU 100% usage after power cut - RT-AC3200

Discussion in 'Asuswrt-Merlin' started by EnF70, Oct 11, 2017.

  1. EnF70

    EnF70 Occasional Visitor

    Joined:
    Jan 4, 2016
    Messages:
    27
    I got this a couple of times already, with older versions and with 380.68.2.
    After a power cut the router reboots faster than the Virgin Media modem (bridge) and it gets into this state.
    CPU is 100% on both cores and the router overheats, I think after some time nothing works, a reboot of the router fixes the issue.

    First few processes in the top output are:

    Code:
    Mem: 96380K used, 159192K free, 928K shrd, 4780K buff, 15348K cached
    CPU: 27.5% usr 11.0% sys  0.0% nic  0.0% idle  0.0% io  0.0% irq 61.4% sirq
    Load average: 2.44 1.45 0.64 3/100 2334
      PID  PPID USER     STAT   VSZ %VSZ CPU %CPU COMMAND
      501     1 admin    R     1640  0.6   0 47.9 /bin/wps_monitor
     1643     1 admin    R     1172  0.4   1 43.7 miniupnpd -f /etc/upnp/config
      491     1 admin    R     1260  0.4   1  2.8 protect_srv
     1108     1 admin    R     6056  2.3   1  1.7 /etc/openvpn/vpnserver1 --cd /etc/openvpn/server1 --config config.ovpn
      924     1 admin    S     2048  0.8   0  1.1 avahi-daemon: running [RT-AC3200-C330.local]
      515     1 admin    S     6656  2.6   1  0.8 httpd -i br0
        3     2 admin    SW       0  0.0   0  0.4 [ksoftirqd/0]
    
    I can disable WPS (I am not using it anyway) and try again...
     
  2. thelonelycoder

    thelonelycoder Part of the Furniture

    Joined:
    Jan 23, 2014
    Messages:
    3,533
    Location:
    Switzerland
    That's highly advised, also disable UPnP in the WAN settings if you want to make your router more secure.
     
  3. EnF70

    EnF70 Occasional Visitor

    Joined:
    Jan 4, 2016
    Messages:
    27
    Decided to do a Factory reset as those two processes were still using a lot of CPU even after a couple of reboots.
    So the issue might not be related to a power cut or to the order in which the modem and router rebooted.
     

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