[Bug 218653] Intel e1000 network link drops under high network load

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=218653

Kaho Toshikazu <kaho at elam.kais.kyoto-u.ac.jp> changed:

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--- Comment #3 from Kaho Toshikazu <kaho at elam.kais.kyoto-u.ac.jp> ---
(In reply to nn from comment #1)
I think the link drop itself is caused by a Tx error, but you have
many Rx errors shown by the Ierrs of the netstat output and
you should investigate what errors occur at first.

Can you see a `sysctl dev.em.0` result? Can you get which knobs
related errors are increasing their counters? 
For example, does rx_overrun or crc_errs has a non-zero value?

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