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    I350-T2 WAN Throughput issue

    Scheduled Pinned Locked Moved General pfSense Questions
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    • N Offline
      nipicimi
      last edited by

      Hello,

      I'm somewhat new to PFSense, and I have a throughput issue I don't understand. Basically I am only reaching ~800 megabit/s through my PFsense box when I use an i350-T2. When I connect directly to my ISP's router I can reach ~950 megabit/s. I have already tried the "Hardware Tuning and Troubleshooting", but none of the settings affect my throughput.

      So far, it looks like the issue only happens if I use an intel i350 as WAN on bare metal, see my tests below.
      Pfsense hardware: bare metal. i3-10100, h470 motherboard, 8 GB ram, SSD. i350-T2 PCIE. Onboard i219V (compiled by me). 1000 megabit from ISP.

      My tested setup:
      setup 1:
      PC <--> ISP router
      Throughput: ~950 megabit/s

      setup 2:
      PC <--> (LAN:i350#1) PFSense (WAN:i350#2) <--> ISP router
      Throughput: ~800 megabit/s

      setup 3:
      Interestingly enough, if i try this setup
      PC <--> (LAN:i350) PFSense (WAN:i219V) <--> ISP router
      Throughput: ~950 megabit/s

      setup 4:
      However, if i try the reverse:
      PC <--> (LAN:i219V) PFSense (WAN:i350) <--> ISP router
      Throughput: ~800 megabit/s

      side note:
      I tried the i350-T2 PCIE in a hyper-V PFsense using two virtual switches on an another machine (similar to setup #1), and as I remember I was able to get ~950 megabit/s.

      I don't understand why only setup #3 gives me the desired throughput, and I have no idea how to continue my troubleshooting with setup #2.

      Any advise is greatly appreciated.

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      • stephenw10S Offline
        stephenw10 Netgate Administrator
        last edited by

        How are you testing? 941Mbps is the limit of what I expect to see there so if you are seeing 950 there is probably some averaging errors happening.

        It could be some hardware off-loading issues. I would disable all hardware off-loading at least as a test.

        If you compiled your own driver to get i219V support I assume the i350s are using that too?
        Have you tried the in kernel driver in setup 2, without the i219V?

        Steve

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