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    Artificial Latency

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    • coliverC
      coliver
      last edited by coliver

      I was asked by an acquaintance the other day how to produce latency on a virtual network. I was a bit at a loss. I assumed pfSense or VyOS could do this but now that I am looking that doesn't seem to be the case.

      Anyone have an idea on how to introduce things like packet loss or latency into a virtual network?

      1 Reply Last reply Reply Quote 2
      • hobbit666H
        hobbit666
        last edited by

        I've always wondered how to "load" test things like network, RDS, Citrix etc.
        (sorry no help I know 🙂 )

        scottalanmillerS 1 Reply Last reply Reply Quote 0
        • scottalanmillerS
          scottalanmiller @hobbit666
          last edited by

          @hobbit666 said in Artificial Latency:

          I've always wondered how to "load" test things like network, RDS, Citrix etc.
          (sorry no help I know 🙂 )

          There is a load testing suite for that called LoginVSI. It is the industry standard load testing system for that.

          https://www.loginvsi.com/

          hobbit666H 1 Reply Last reply Reply Quote 3
          • hobbit666H
            hobbit666 @scottalanmiller
            last edited by

            @scottalanmiller said in Artificial Latency:

            @hobbit666 said in Artificial Latency:

            I've always wondered how to "load" test things like network, RDS, Citrix etc.
            (sorry no help I know 🙂 )

            There is a load testing suite for that called LoginVSI. It is the industry standard load testing system for that.

            https://www.loginvsi.com/

            Good to know thanks Scott

            1 Reply Last reply Reply Quote 0
            • scottalanmillerS
              scottalanmiller
              last edited by

              Not sure what tools will just introduce some latency, though.

              1 Reply Last reply Reply Quote 0
              • J
                Jason Banned
                last edited by

                Some Bad QOS and throttling should.

                1 Reply Last reply Reply Quote 0
                • hobbit666H
                  hobbit666
                  last edited by

                  What about some "hacking" tools like DDoS type stuff?

                  1 Reply Last reply Reply Quote 0
                  • scottalanmillerS
                    scottalanmiller
                    last edited by

                    those things create noise and whatnot, but they don't simulate latency.

                    1 Reply Last reply Reply Quote 0
                    • art_of_shredA
                      art_of_shred Banned
                      last edited by

                      Why exactly would one ever want to introduce latency artificially?

                      scottalanmillerS coliverC 2 Replies Last reply Reply Quote 0
                      • scottalanmillerS
                        scottalanmiller @art_of_shred
                        last edited by

                        @art_of_shred said in Artificial Latency:

                        Why exactly would one ever want to introduce latency artificially?

                        Now else do you test to know how things will behave when there is latency?

                        1 Reply Last reply Reply Quote 1
                        • coliverC
                          coliver @art_of_shred
                          last edited by coliver

                          @art_of_shred said in Artificial Latency:

                          Why exactly would one ever want to introduce latency artificially?

                          Testing WAN applications on a virtual network. For instance figuring out how much latency an application can withstand before failing or corrupting data. Granted that doesn't make sense with the web based application but for a client-server application over a VPN it could be incredibly useful. The same could be true for bandwidth limiting and figuring out how much bandwidth an application requires to be reliable.

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                          • scottalanmillerS
                            scottalanmiller
                            last edited by

                            http://info.iet.unipi.it/~luigi/dummynet/

                            coliverC 1 Reply Last reply Reply Quote 0
                            • art_of_shredA
                              art_of_shred Banned
                              last edited by

                              Yeah, I was wondering what you would be testing for. I guess that makes sense, seeing how much the processes can stand. But if you're adding some to test, then there must not inherently be any. You should be happy there's no latency and just not worry about it! 😛

                              coliverC 1 Reply Last reply Reply Quote 0
                              • coliverC
                                coliver @art_of_shred
                                last edited by

                                @art_of_shred said in Artificial Latency:

                                Yeah, I was wondering what you would be testing for. I guess that makes sense, seeing how much the processes can stand. But if you're adding some to test, then there must not inherently be any. You should be happy there's no latency and just not worry about it! 😛

                                Like I said this would be more for WAN-esque applications. Running software over a VPN etc. I thought it would be a decent thought experiment.

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                                • coliverC
                                  coliver @scottalanmiller
                                  last edited by

                                  @scottalanmiller said in Artificial Latency:

                                  http://info.iet.unipi.it/~luigi/dummynet/

                                  I'll forward that along thanks.

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