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Date:      Wed, 02 Jan 2019 17:58:41 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 234570] em(4) 12.0 regressions: Does not function after resume,  hw.em.{txd,rxd} ignored, deprecated EM_MULTIQUEUE performance loss
Message-ID:  <bug-234570-7501-4ZL8yjmazE@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-234570-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-234570-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D234570

Eric Joyner <erj@freebsd.org> changed:

           What    |Removed                     |Added
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                 CC|                            |erj@freebsd.org

--- Comment #2 from Eric Joyner <erj@freebsd.org> ---
(In reply to Marek Zarychta from comment #0)

Hi; I can respond to a couple of these that aren't WoL-related:

In 12, the em(4) driver uses the iflib framework, so the tunables have chan=
ged.
To change the number of descriptors in the queues, use the
"dev.em.0.iflib.override_ntxds" and "dev.em.0.iflib.override_nrxds" sysctls.
These are marked as tunables, so you can also set these in /boot/loader.con=
f,
and iflib should use these values when the driver is loaded.

For "options EM_MULTIQUEUE", it appears that only really changed the driver=
 for
the 82574 adapter in 11, so that option wouldn't have applied to your i217
adapter. Regardless, that functionality has been turned on by default for M=
SI-X
capable em cards (which 82574 is the only one so far), so the option isn't
needed anymore.

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