[REGRESSION] Fresh CURRENT consume much more CPU on network traffic (vlans + routing + ipfw with NAT)

[Lev Serebryakov]

On 19.07.2018 8:39, Kevin Bowling wrote:

> This sounds like a known quirk of the Atom CPU architecture and iflib
> -- can you try this patch https://reviews.freebsd.org/D16302 it should
> help specifically on your hardware.
 Looks like, this patch on r336474 with default sysctl setting:

dev.em.1.iflib.tx_abdicate: 0
dev.em.0.iflib.tx_abdicate: 0

  makes worse, not better (100% CPU load by `kernel{if_io_tqg_X}' even
under very light traffic load).

-- 
// Lev Serebryakov

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