High CPU usage
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I'm running pfBlockerNG-devel 2.2.5_37. For several weeks now I've been seeing high CPU usage by
/usr/local/sbin/lighttpd_pfb -f /var/unbound/pfb_dnsbl_lighty.conf. It's using 85%+ of one core of a Xeon D-5121 with very little traffic flowing. I'm not sure what's going on here, but this doesn't seem normal. -
I think I might have figured it out. Although the traffic rate was low, there were about a dozen requests per second going out to telemetry.malwarebytes.com. This was causing a DNSBL block rate of 34%. I quit out of Malwarebytes on the offending computers and the CPU usage dropped back down to levels that I would expect.
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@mouseskowitz
I had the same issue. Added .malwarebytes.com to the DNSBL Whitelist. Might as well, as submission of suspicious activity back to them is part of what you're paying for.
https://forum.netgate.com/topic/152239/pfblockerng-high-cpu/81?_=1604056473502 -
@provels I'm using the free version so I don't really have any active scanning going on. I think I'll stick with just not having it running at the moment, but that's not a bad idea.
