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    OpenVPN client using 100% of the processor [SOLVED]

    Scheduled Pinned Locked Moved OpenVPN
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    • K
      killerb81
      last edited by

      Thing is, I didn't loose my connection.
      As a test, I started streaming Netflix on my desktop that was routed through one of those tunnels.

      On my other screen I was watching the "System Activity" screen in pfSense.

      Netflix connected and started streaming. As it started to stream the "OpenVPN –config" process started climbing the list of % processor usage.
      It got to 100% of the core it was using then stayed there, even after I shut down Netflix and anything else that was using the connection.

      That's where it sat... at 100%.

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      • S
        serialdie
        last edited by

        I am going to BumP this thread.

        I have this same issue and is causing major cpu spikes.

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        • K
          killerb81
          last edited by

          I went back to 2.1.1.. it's the only release I've tried that doesn't have this issue.
          I'll try 2.2 when it's stable… until then it looks like it'll have to do.

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          • N
            nadir.latif
            last edited by

            Hi,

            We had problems with high cpu. enabling device polling reduced the cpu from 80% to 40%. you may want to read this post. https://forum.pfsense.org/index.php?topic=77963.msg462019#msg462019

            Nadir Latif

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            • S
              serialdie
              last edited by

              @nadir.latif:

              Hi,

              We had problems with high cpu. enabling device polling reduced the cpu from 80% to 40%. you may want to read this post. https://forum.pfsense.org/index.php?topic=77963.msg462019#msg462019

              Nadir Latif

              That's not recommended.
              My issue has stabilized after I worked with my traffic shapers.

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              • K
                killerb81
                last edited by

                bump.

                :(

                I upgraded to 2.3.1 -p5 and the issue is back.
                I even reinstalled completely after I saw the issue come back… it was working fine for a long time and then... bam - back.

                Does anyone have any deffinitive solutions for this?  Would be greatly appreciated.

                Thing is, I don't lose my connections - they're still connected and working fine.  The CPU spikes and the temperature starts rising.
                I have to restart the OpenVPN Client services to get it to calm down.

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                • K
                  killerb81
                  last edited by

                  @serialdie

                  What exactly did you do to your traffic shaping to resolve the issue?
                  I too have traffic shaping configured.

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                  • K
                    killerb81
                    last edited by

                    So, it's interesting.. but I shut off my traffic shaping and the issue seems to have stopped.

                    Does anyone know why this might be?

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                    • K
                      killerb81
                      last edited by

                      *** SOLVED ***  (I think)

                      So after having my traffic shaper turned off for a day, the problem has not been seen.
                      I'm not sure WHY this is, after all, it was the OpenVPN process that was using all the CPU.

                      I did a little digging into my traffic shaper before turning it off and noticed that it wasn't setup how I originally configured it.
                      I had previously set it up using HFSC ques, but just before turning it off I noticed it was using CBQ based ques and some of the other settings had been changed.

                      I could be wrong, but I think during an update of pfSense these settings somehow got changed… because that's when I noticed the VPN processes ramping up, right after an update.
                      In the next few days I'm going to setup my traffic shaper again from scratch and see what happens... I'll post back here after I do some testing.

                      Thanks to all!

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                      • A
                        alecp
                        last edited by

                        I was just monitoring my firewall after a power outage and found this issue.
                        I removed the simple traffic-shaper I recently put in place for VoIP and the CPU usage fell to sensible numbers.
                        I tried putting the shaper back (CBQ) with the wizard but the openvpn usage went back to 100%, so it is not fixed

                        2.3.1-RELEASE-p5 (amd64)

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