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High CPU USAGE IN 2.7.0-RELEASE

Scheduled Pinned Locked Moved General pfSense Questions
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  • S Offline
    stephenw10 Netgate Administrator @Gokulapandi
    last edited by Aug 28, 2024, 12:23 PM

    @Gokulapandi said in High CPU USAGE IN 2.7.0-RELEASE:

    When connecting more users in firewall,

    How many users? Are you using the Captive Portal?

    G 1 Reply Last reply Aug 28, 2024, 1:39 PM Reply Quote 0
    • S stephenw10 moved this topic from Problems Installing or Upgrading pfSense Software on Aug 28, 2024, 12:23 PM
    • G Offline
      Gokulapandi @stephenw10
      last edited by Aug 28, 2024, 1:39 PM

      @stephenw10

      e3ae36d4-9fff-4796-a907-06d43f6a3806-image.png

      We are not using captive portal. Around 50 devices are connecting in LAN.

      95fdf01b-17eb-4dbc-85cb-af793e43681a-image.png

      Interrupt load increases as number devices connection increase in LAN.

      "LAN in" Traffic has reaching till 300 M as cpu interrupt load increases.Then we need to reboot firewall.

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      • S Offline
        stephenw10 Netgate Administrator @stephenw10
        last edited by Aug 28, 2024, 5:16 PM

        @stephenw10 said in High CPU USAGE IN 2.7.0-RELEASE:

        What NICs do you have in that box? I can see re0 there.

        Is it all Realtek NICs?

        G 1 Reply Last reply Aug 28, 2024, 5:56 PM Reply Quote 0
        • G Offline
          Gokulapandi @stephenw10
          last edited by Gokulapandi Aug 28, 2024, 5:58 PM Aug 28, 2024, 5:56 PM

          @stephenw10

          We are using three NIC.

          We are using two WANs and one LAN.

          WAN1 is Intel adapters
          LAN is Intel adapters
          WAN 2 is Realtek adapter

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          • S Offline
            stephenw10 Netgate Administrator
            last edited by Aug 28, 2024, 6:23 PM

            Are you load-balancing traffic between those WANs?

            G 1 Reply Last reply Aug 28, 2024, 6:27 PM Reply Quote 0
            • G Offline
              Gokulapandi @stephenw10
              last edited by Gokulapandi Aug 28, 2024, 6:28 PM Aug 28, 2024, 6:27 PM

              @stephenw10

              No, We are not doing a load balancer as secondary WAN has less bandwidth.

              FYI - We have updated now the version to 2.7.2

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              • S Offline
                stephenw10 Netgate Administrator
                last edited by Aug 28, 2024, 7:29 PM

                What does vmstat -i show is creating the interrupt load?

                G 1 Reply Last reply Aug 29, 2024, 5:26 AM Reply Quote 0
                • G Offline
                  Gokulapandi @stephenw10
                  last edited by Aug 29, 2024, 5:26 AM

                  @stephenw10

                  This is taken before issue.

                  7be22a64-b947-4b05-ab46-9bc25277c1b6-image.png

                  1 Reply Last reply Reply Quote 0
                  • S Offline
                    stephenw10 Netgate Administrator
                    last edited by Aug 29, 2024, 10:56 AM

                    Ok nothing too huge there. What does it show when the issue happens?

                    G 1 Reply Last reply Aug 29, 2024, 11:59 AM Reply Quote 0
                    • G Offline
                      Gokulapandi @stephenw10
                      last edited by Aug 29, 2024, 11:59 AM

                      @stephenw10

                      Our Network has IPsec VPN, and OpenVPN. I can access the firewall via web GUI and SSH, IPsec network, and Open VPN Client.

                      Once issue has arrived, I can't able to firewall via SSH, web GUI, IPsec Network, and OpenVPN client but all existing devices can connect to the internet continuously without any issue..

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                      • S Offline
                        stephenw10 Netgate Administrator
                        last edited by Aug 29, 2024, 5:37 PM

                        Can you connect to the console to check that? You captured the top output above.

                        G 1 Reply Last reply Aug 29, 2024, 5:48 PM Reply Quote 0
                        • G Offline
                          Gokulapandi @stephenw10
                          last edited by Aug 29, 2024, 5:48 PM

                          @stephenw10

                          I couldn't access the console, it froze just like SSH. After rebooting, I was able to access the console.

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                          • S Offline
                            stephenw10 Netgate Administrator
                            last edited by Aug 29, 2024, 5:53 PM

                            How did you get the output from top then?

                            G 1 Reply Last reply Aug 29, 2024, 6:07 PM Reply Quote 0
                            • G Offline
                              Gokulapandi @stephenw10
                              last edited by Gokulapandi Aug 29, 2024, 6:07 PM Aug 29, 2024, 6:07 PM

                              @stephenw10

                              After a few seconds of the above output, I noticed that the console froze.

                              1 Reply Last reply Reply Quote 0
                              • S Offline
                                stephenw10 Netgate Administrator
                                last edited by Aug 29, 2024, 6:29 PM

                                Hmm, you might try entering 'ctl+t' at the console. That can respond when nothing else does. It should show what process is using the CPU cycles.

                                G 1 Reply Last reply Aug 29, 2024, 7:10 PM Reply Quote 0
                                • G Offline
                                  Gokulapandi @stephenw10
                                  last edited by Aug 29, 2024, 7:10 PM

                                  @stephenw10

                                  I attempted everything, but I was unable to receive any output from the console.

                                  I noticed bandwidth usage, Below Image is when there was no issue.

                                  7caf4aef-2574-4f81-8733-9895b040f01c-image.png

                                  "The images below (bandwidth and CPU load interruption screenshot) were taken before the issue occurred. When issue is arriving,"Lan in Bandwidth " will be reaching a maximum 300M consistently as the image has 170 MB.

                                  c5fe1281-0c1c-40ad-ae3c-fd6f33d2b360-image.png

                                  836babd2-5676-4383-b180-9bf06cb6128a-image.png

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                                  • S Offline
                                    stephenw10 Netgate Administrator
                                    last edited by Aug 29, 2024, 7:22 PM

                                    Ah, maybe it really is just slamming the firewall with traffic from LAN then. If you disconnect the LAN when that's happening does the console become responsive again?

                                    Is LAN igb0?

                                    G 1 Reply Last reply Aug 29, 2024, 7:33 PM Reply Quote 1
                                    • G Offline
                                      Gokulapandi @stephenw10
                                      last edited by Aug 29, 2024, 7:33 PM

                                      @stephenw10

                                      Yes LAN is igb0.

                                      I didn't disconnect the LAN and check the console. I will check next time.

                                      How can I monitor LAN traffic for each host? Which log should be checked for this issue? Please let me know

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                                      • S Offline
                                        stephenw10 Netgate Administrator
                                        last edited by Aug 29, 2024, 7:44 PM

                                        I would expect the system log so show something after you reboot.

                                        The igb0 NIC is multithreaded so it can try to use all available CPU cycles on all cores. em0 is single so could not. You might switch those assignments so you can still connect and investigate when this hgappens.

                                        G 1 Reply Last reply Aug 30, 2024, 11:17 AM Reply Quote 0
                                        • G Offline
                                          Gokulapandi @stephenw10
                                          last edited by Aug 30, 2024, 11:17 AM

                                          @stephenw10 said in High CPU USAGE IN 2.7.0-RELEASE:

                                          em0

                                          can you explain little bit

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