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    High CPU user util

    Scheduled Pinned Locked Moved General pfSense Questions
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    • B
      BlijeGub
      last edited by

      It was happening at night too when I had my pc turned off so it has to be something in the background.

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      • stephenw10S
        stephenw10 Netgate Administrator
        last edited by

        Check the other graphs there, do you see traffic flow increase at the same times?

        Gateway issues? Packet loss?

        Steve

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        • B
          BlijeGub
          last edited by BlijeGub

          I can't see historical traffic data but when the cpu is high I am not seeing an increase in traffic on the live traffic graph. And if I do a dsl reports speed test I get an A+ rating on everything with 700mbps so there doesn't seem te be any issue there. It is probably some php script it is running in the background but I don't know where to find out what it is doing exactly. And I don't get why this is happening this pfSense install is only 2 days old now.

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          • stephenw10S
            stephenw10 Netgate Administrator
            last edited by

            Try running ps auxwwd. That may show you what script is running.

            Steve

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            • B
              BlijeGub
              last edited by BlijeGub

              493ac122-5ef4-4a9f-9c90-a38abbc32922-image.png
              The idle process is down by 100% because its a quad core cpu but no other script is running with a supstantial amount of cpu usage.

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              • stephenw10S
                stephenw10 Netgate Administrator
                last edited by

                And it was showing the increased usage in monitoring while that command was run?

                Steve

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                • B
                  BlijeGub
                  last edited by

                  Yes I waited for it to start having increased cpu usage.

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                  • stephenw10S
                    stephenw10 Netgate Administrator
                    last edited by

                    Actually you should be able to see the command in the output of top -aSH. The gui system activity looks to have just truncated it. I would guess it's prefixes.php from that list though.
                    Do you have IPv6 configured? Do you need it?

                    Steve

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                    • B
                      BlijeGub
                      last edited by BlijeGub

                      3f69f041-e3fd-4f61-81b9-f77c9abbe8b8-image.png
                      indeed prefixes.php and I do have ipv6 configured and am using it for internet connectivity and to get a better understanding on how ipv6 works.

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                      • stephenw10S
                        stephenw10 Netgate Administrator
                        last edited by

                        Hmm, well I would suggest reviewing exactly what you have configured there. It's hard to imagine what that is doing for 1h using that much CPU.
                        I'm guessing 2hrs is the lease time somewhere...

                        Steve

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                        • B
                          BlijeGub
                          last edited by

                          Fixed by disabling dhcpv6 which I didn't even need because router advertising is enough to get ipv6 working. Still don't know why dhcpv6 was causing the cpu spikes though.

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