[Bug 234570] em(4) 12.0 regressions: Does not function after resume, hw.em.{txd,rxd} ignored, deprecated EM_MULTIQUEUE performance loss

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Wed Jan 2 18:45:07 UTC 2019


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=234570

--- Comment #3 from Marek Zarychta <zarychtam at plan-b.pwste.edu.pl> ---
(In reply to Eric Joyner from comment #2)
Thank you for the explanation and clarification. I must admit that
"dev.em.0.iflib.override_ntxds" and "dev.em.0.iflib.override_nrxds" tunables
work as "hw.em.rxd" and "hw.em.txd" used to. Indeed, this I217-LM wasn't using
multiple queues while running 11-STABLE, but I build the same  kernel for a few
boxes with different em(4) NICs. Likely only one of them seems to be multiqueue
capable.

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