I can't tell you what performance hit, that depends upon your
application, it will hit TCP apps harder than UDP because UDP can't take
advantage of it at all. The performance hit will be highest in net
centric apps like routers.
apt install ethtool
ethtool --offload eth0 rx off tx off
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On Tue, 7 Jul 2020, Ted Gerold wrote:
> Date: Tue, 07 Jul 2020 16:26:22 -
> From: Ted Gerold <1766...@bugs.launchpad.net>
> To: nan...@eskimo.com
> Subject: [Bug 1766377] Re: Intel Ethernet I218-V [8086:15a1] Subsystem
> [1043:85c4] detected Hardware Unit Hang
>
> Unfortunately I cant just install another card in an NUC. What
> performance hit does turning hardware offloading off have? How is it
> done and how is it reverted?
>
> Wish they would just fix the problem.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1766377
>
> Title:
> Intel Ethernet I218-V [8086:15a1] Subsystem [1043:85c4] detected
> Hardware Unit Hang
>
> Status in linux package in Ubuntu:
> Expired
> Status in linux source package in Bionic:
> Confirmed
>
> Bug description:
> With Bionic kernel 4.15.0-15 and 4.15.0-17 I am experiencing periodic
> hanging of the LAN connection. This is happening on an Asus X99-DELUX
> motherboard, controller specifications:
> Intel® I218V, 1 x Gigabit LAN Controller(s)
> Intel® I211-AT, 1 x Gigabit LAN
> Dual Gigabit LAN controllers- 802.3az Energy Efficient Ethernet (EEE)
> appliance
> Support Teaming Technology
> ASUS Turbo LAN Utility
> The CPU is an i7-6850 and it is configured with 128GB of DDR4 RAM.
> This machine has a number of Qemu/KVM virtual guests and is using a software
> bridge to share the interface.
> This did not happen with 17.10 and 4.13.0 kernel. It is happening on
> multiple machines here.
> Here are the messages from dmesg:
> 1016198.957850] e1000e :00:19.0 eno1: Detected Hardware Unit Hang:
> TDH
> TDT <2d>
> next_to_use <2d>
> next_to_clean
> buffer_info[next_to_clean]:
> time_stamp <13c8d0008>
> next_to_watch
> jiffies <13c8d0880>
> next_to_watch.status <0>
> MAC Status <80083>
> PHY Status <796d>
> PHY 1000BASE-T Status <3c00>
> PHY Extended Status<3000>
> PCI Status <10>
> [1016200.942072] e1000e :00:19.0 eno1: Detected Hardware Unit Hang:
> TDH
> TDT <2d>
> next_to_use <2d>
> next_to_clean
> buffer_info[next_to_clean]:
> time_stamp <13c8d0008>
> next_to_watch
> jiffies <13c8d1040>
> next_to_watch.status <0>
> MAC Status <80083>
> PHY Status <796d>
> PHY 1000BASE-T Status <3c00>
> PHY Extended Status<3000>
> PCI Status <10>
> [1016202.413607] e1000e :00:19.0 eno1: Reset adapter unexpectedly
> [1016202.413701] bridge0: port 1(eno1) entered disabled state
> [1016202.413732] bridge0: topology change detected, propagating
> [1016206.76] e1000e: eno1 NIC Link is Up 1000 Mbps Full Duplex, Flow
> Control: Rx/Tx
> [1016206.666708] bridge0: port 1(eno1) entered blocking state
> [1016206.666712] bridge0: port 1(eno1) entered listening state
> [1016216.750911] bridge0: port 1(eno1) entered learning state
> [1016232.110291] bridge0: port 1(eno1) entered forwarding state
> [1016232.110294] bridge0: topology change detected, sending tcn bpdu
> [1017834.390579] cfg80211: Loading compiled-in X.509 certificates for
> regulatory database
> [1017834.390770] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
> [1017834.414792] platform regulatory.0: Direct firmware load for
&
