Re: igc problems with heavy traffic

Ah, sorry about the noise then. I cant remember if I ran them connected directly, I may have briefly for testing but I certainly did not notice any drop issues. I am just using a built in switch with the TP Link Archer-ax11000 WiFi router which connects to my Internet at 2.5Gb and the local wired connections are at 1Gb. No drop issues with that. My initial thought would be that the problem is with your connection media, but I'm guessing you already troubleshooted that.






---- On Wed, 24 Aug 2022 19:37:43 -0400 mike tancsa <mike@sentex.net> wrote ---



On 8/24/2022 7:22 PM, Mike Jakubik
      wrote:

What kind of HW are you running on? Im assuming some sort
          of fairly modern x86 CPU with at least 4 cores.. Is it
          multiple CPUs with Numa nodes perhaps? In any case, if you are
          testing with iperf3, try using cpuset on iperf3 to bind it to
          specific cores. I had a performance issue on a modern Epyc
          server with a Mellanox 25Gb card. It turns out the issue was
          with the scheduler and how it was bouncing the processes
          around diff cores/CPU caches. See "Poor performance with
          stable/13 and Mellanox ConnectX-6 (mlx5)" on the freebsd-net
          mailing list for details.



P.S. I also use a number of igc (Intel i225 @ 2.5Gb) cards
          at home and have had no issues with them.





Hi,

    Performance is excellent. Its just the random link drops
      thats at issue.  With default settings, running iperf3 on back to
      back NICs via xover takes a good 20-45min before the link drop. 
      If anything, I am surprised at how much traffic these small
      devices can forward.  IPSEC especially is super fast on RELENG_13.
      The link drops seem to be always on the sender.  With fc disabled,
      reducing the link speed to 1G seems to make the issue go away, or
      at least its not happening in overnight testing. Its a Celeron
      N5105. https :// http://www.aliexpress.com/item/1005003990581434.html

Also, if you hook a couple back to back via xover cable, are you
      able to manually set the speed to 1G and pass traffic ? It doesnt
      work for me.

    ---Mike






Mike Jakubik

https://www.swiftsmsgateway.com/



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