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Date:      Mon, 17 Apr 2017 02:22:35 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-net@FreeBSD.org
Subject:   [Bug 218653] Intel e1000 network link drops under high network load
Message-ID:  <bug-218653-2472-TldFFfwSKn@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-218653-2472@https.bugs.freebsd.org/bugzilla/>
References:  <bug-218653-2472@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D218653

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

           What    |Removed                     |Added
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                 CC|                            |kaho@elam.kais.kyoto-u.ac.j
                   |                            |p

--- Comment #3 from Kaho Toshikazu <kaho@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?=20
For example, does rx_overrun or crc_errs has a non-zero value?

--=20
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