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    Remove device polling option from GUI

    Scheduled Pinned Locked Moved 2.1 Snapshot Feedback and Problems - RETIRED
    16 Posts 6 Posters 5.7k Views
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    • jimpJ
      jimp Rebel Alliance Developer Netgate
      last edited by

      It can help on certain low-end equipment.

      Also it's been found to greatly improve performance for bhyve VMs. (Can't find the link at the moment, but it was a tremendous improvement)

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      • D
        doktornotor Banned
        last edited by

        Not sure what counts as low-end. It totally kills Alix (tested with 2D13 and 2D2), even though vr driver should support this. I assume the " list of supported cards" does not really exists, correct?  ;)

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        • K
          kejianshi
          last edited by

          The suggestion try polling option also made me the subject of public ridicule which is even more worrisome than it breaking nearly anything its activated on :o

          Maybe change the menu to simply say "Only activate if you are using bhyve VMs and a device that supports polling".

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          • A
            andriusst
            last edited by

            IMHO it is always better to have a choice than not to. The moment it is removed someone will ask to bring it back.

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            • jimpJ
              jimp Rebel Alliance Developer Netgate
              last edited by

              ^ that, too.

              Maybe some Scary Warnings™ but it wouldn't get removed.

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              • D
                doktornotor Banned
                last edited by

                Well, warnings would definitely be appreciated… Maybe with some real tested examples of where it actually helps, instead of doing the exact opposite.

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                • jimpJ
                  jimp Rebel Alliance Developer Netgate
                  last edited by

                  The example there is valid, just not on everyone's hardware.

                  We can't write a book next to every option though, at some point the burden must be on the user to know what they're doing. We can write some warnings, maybe link to some docs, but ultimately we can't stop everyone from shooting their own feet.

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                  • K
                    kejianshi
                    last edited by

                    I like scary warnings.  ::)

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                    • K
                      Klaws
                      last edited by

                      Warning:
                      Won't make the sky blue.
                      Won't make the grass green.

                      Whatever, the presence of the device polling feature doesn't bother me much. Except that it can lead some people (including me) to suggest someone else to try out this setting, resulting in being the subject of public ridicule. Yup, me too ;-)

                      However, if one can manage to pry the eyes off the Device Polling checkbox item, one will notice some other options further down, with the somewhat fuzzy "broken in some hardware drivers, and may impact performance with some specific NICs" remark.

                      Um. Which ones are the broken drivers? And which specific NICs will make you suffer hard?

                      What I'd consider to be totally cool would be a self-test procedure. Which runs totally automatically, rebooting and trying out all possible combinations and everything.

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                      • D
                        doktornotor Banned
                        last edited by

                        @Klaws:

                        However, if one can manage to pry the eyes off the Device Polling checkbox item, one will notice some other options further down, with the somewhat fuzzy "broken in some hardware drivers, and may impact performance with some specific NICs" remark.
                        Um. Which ones are the broken drivers? And which specific NICs will make you suffer hard?

                        I suspect naming those that work would be a whole lot easier… have yet to see one. The allegedly "supported" drivers are in man polling(4).

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                        • A
                          athurdent
                          last edited by

                          @doktornotor:

                          The allegedly "supported" drivers are in man polling(4).

                          After reading man polling I tried that a few month ago with the em interfaces in my Lanner FW7530 because I though I could take some load off the ATOM CPU. I had to walk to that box afterwards and flip the power switch ;)
                          Good thing I used ifconfig to test polling and not the GUI switch.

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                          • D
                            doktornotor Banned
                            last edited by

                            @athurdent:

                            After reading man polling I tried that a few month ago with the em interfaces in my Lanner FW7530 because I though I could take some load off the ATOM CPU. I had to walk to that box afterwards and flip the power switch ;)
                            Good thing I used ifconfig to test polling and not the GUI switch.

                            What's seriously disturbing is - how can something so blatantly broken make it into official release kernels.

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                            • jimpJ
                              jimp Rebel Alliance Developer Netgate
                              last edited by

                              …because it's not seriously broken for people that need it... (which, admittedly, is very few people these days)

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                              • K
                                Klaws
                                last edited by

                                So…move it into the "System Tunables"?

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                                • jimpJ
                                  jimp Rebel Alliance Developer Netgate
                                  last edited by

                                  Not quite that simple. It isn't just a matter of flipping a sysctl bit (which is what that page is for)

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