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Date:      Sat, 30 Jan 2016 02:23:58 +0100
From:      Marius Strobl <marius@alchemy.franken.de>
To:        Mike Tancsa <mike@sentex.net>
Cc:        Harry Schmalzbauer <freebsd@omnilan.de>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>
Subject:   Re: possible em regression (was Re: svn commit: r294958 - in stable/10: share/man/man4 sys/dev/e1000 sys/dev/ixgb sys/dev/netmap)
Message-ID:  <20160130012358.GY15359@alchemy.franken.de>
In-Reply-To: <56ABCE95.3030807@sentex.net>
References:  <201601272231.u0RMV8LW019394@repo.freebsd.org> <56ABAA92.5050901@sentex.net> <56ABB291.5040305@omnilan.de> <56ABCE95.3030807@sentex.net>

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On Fri, Jan 29, 2016 at 03:41:57PM -0500, Mike Tancsa wrote:
> 
> No multi queue. Stock GENERIC kernel with a couple of things removed.
> hw.em are just the defaults. I will try without TSO
> 
> % ifconfig em0
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> 
> options=4209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,VLAN_HWTSO>
> 

Hrm, that's strange, TSO4 should be enabled by default so apparently
you are already disabling it; what is the behavior if you turn it on?
Do you use a < Gigabit link?

Marius




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