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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

    Jan 4, 2016
    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:

    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
      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

    Jan 23, 2014
    In the heart of 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

    Jan 4, 2016
    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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