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    ESXi 5.5 packet loss

    Scheduled Pinned Locked Moved Virtualization
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    • johnpozJ Offline
      johnpoz LAYER 8 Global Moderator
      last edited by

      how many packets?  I am not seeing this at all..

      nodropps.png
      nodropps.png_thumb

      An intelligent man is sometimes forced to be drunk to spend time with his fools
      If you get confused: Listen to the Music Play
      Please don't Chat/PM me for help, unless mod related
      SG-4860 25.07.1 | Lab VMs 2.8.1, 25.07.1

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      • A Offline
        arozanov
        last edited by

        @johnpoz:

        how many packets?  I am not seeing this at all..

        Sorry, don't know why, but its problem with screenshot from vsphere client. Something around 50-300 packets every 30-60 mins.
        Before tuning, it was 200-400 every minute.

        drops.JPG
        drops.JPG_thumb

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        • johnpozJ Offline
          johnpoz LAYER 8 Global Moderator
          last edited by

          no not how many drops how many TOTAL packets – ie the ones your not dropping.  See my screen shot.

          An intelligent man is sometimes forced to be drunk to spend time with his fools
          If you get confused: Listen to the Music Play
          Please don't Chat/PM me for help, unless mod related
          SG-4860 25.07.1 | Lab VMs 2.8.1, 25.07.1

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          • A Offline
            arozanov
            last edited by

            @johnpoz:

            no not how many drops how many TOTAL packets – ie the ones your not dropping.  See my screen shot.

            Ah, ok.

            pckts.JPG
            pckts.JPG_thumb

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            • H Offline
              Halvsvenskeren
              last edited by

              Try to see if E1000 network adapter works better for comparison.

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              • johnpozJ Offline
                johnpoz LAYER 8 Global Moderator
                last edited by

                So your seeing a LOT of packets!!!  Yeah I think adjusting the ring value or ring 2 value might be in order.. But sorry not sure how to do that in freebsd or pfsense.. linux normally just a simple ethtool -G

                With intel something with sysctl hw.em.rxd= but not sue with using the vmx3??

                An intelligent man is sometimes forced to be drunk to spend time with his fools
                If you get confused: Listen to the Music Play
                Please don't Chat/PM me for help, unless mod related
                SG-4860 25.07.1 | Lab VMs 2.8.1, 25.07.1

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                • A Offline
                  arozanov
                  last edited by

                  @johnpoz:

                  So your seeing a LOT of packets!!!  Yeah I think adjusting the ring value or ring 2 value might be in order.. But sorry not sure how to do that in freebsd or pfsense.. linux normally just a simple ethtool -G

                  With intel something with sysctl hw.em.rxd= but not sue with using the vmx3??

                  Yes, same problem for me. Not sure, can i write just something like hw.vmx.rxd=4096? And which parameter for ring value, and which one for ring 2?…..

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                  • A Offline
                    arozanov
                    last edited by

                    @Halvsvenskeren:

                    Try to see if E1000 network adapter works better for comparison.

                    Its a little problematic for me. But can be done, if needed. I thought, it will be the same problem.

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                    • H Offline
                      Halvsvenskeren
                      last edited by

                      We saw much better performance from the E1000 than VMXnet2 and 3.

                      Try it and report back.

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                      • A Offline
                        arozanov
                        last edited by

                        @Halvsvenskeren:

                        We saw much better performance from the E1000 than VMXnet2 and 3.

                        Try it and report back.

                        Ok, will try later today and will report back.

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                        • A Offline
                          arozanov
                          last edited by

                          So, the problem was with receiving buffers. According with https://www.freebsd.org/cgi/man.cgi?query=vmx&sektion=4  i increased buffers of vmx adapters and problem is gone (em works well too, with tuned buffers). After, jumbo frames was overloaded, so i increased this parameter too.
                          The same with receiving buffers on windows clients, but this is another story…

                          Thanks, guys! :)

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                          • A Offline
                            anzak84
                            last edited by

                            Which commands were executed on pfsense?
                            System: Advanced: System Tunables
                            hw.em.txd value
                            hw.em.rxd value
                            right?

                            System 2 Nics  Wan -em1000 and Lan -em1000

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