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CPU Spike every 12 hours

Gnome
I have been running my Sophos UTM for a couple of months now and all seems to be working fine with one exception, every 12 hours (06:40 and 18:40) my CPU spikes to 100% with the consequence being that during this period the UTM does not allow any traffic through (see attached graphs).

I have looked through the system logs and the only thing that seems to correspond to these times is the cron job for "adbs-maintenance.plx", I believe that this is related to the reporting system but I  do not know how to diagnose further.  Any guidance would be appreciated.

Regards

Gnome

Firmware Version:  9.109-1
Memory: 2GBytes
Hardware: HP ProLiant G7 N54L 2.2GHz MicroServer


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  • 0 in reply to BAlfson
    I originally had those at 12 hours but as the issue got more intrusive I changed them, they are now at:

    Firmware download interval: 4 hours
    Pattern download/installation interval: 6 hours

    I set them with these times so that if either was causing the problem I would see the patten in the CPU profile, but no change, the problem is still at 12 hour invervals.

    Regards

      Gnome