Re: Large performance regression with 6in4 tunnel (sit)
From: Stephen Rothwell <hidden>
Date: 2016-11-25 03:09:40
Hi Eric, On Thu, 24 Nov 2016 19:01:28 -0800 Eric Dumazet [off-list ref] wrote:
Since I do not have this problem at all on my hosts, it could be a buggy ethernet driver. Could you share what NIC card and driver you are using ?
# uname -a Linux bilbo 4.7.0-1-amd64 #1 SMP Debian 4.7.8-1 (2016-10-19) x86_64 GNU/Linux # lspci | grep -i net 03:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03) 04:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03) from boot dmesg: [ 7.573725] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.3.0-k [ 7.573726] igb: Copyright (c) 2007-2014 Intel Corporation. [ 7.752918] igb 0000:03:00.0: added PHC on eth0 [ 7.752925] igb 0000:03:00.0: Intel(R) Gigabit Ethernet Network Connection [ 7.752927] igb 0000:03:00.0: eth0: (PCIe:2.5Gb/s:Width x1) 00:1e:67:9f:d4:24 [ 7.753460] igb 0000:03:00.0: eth0: PBA No: 102100-000 [ 7.753460] igb 0000:03:00.0: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s) [ 7.902433] igb 0000:04:00.0: added PHC on eth1 [ 7.902434] igb 0000:04:00.0: Intel(R) Gigabit Ethernet Network Connection [ 7.902435] igb 0000:04:00.0: eth1: (PCIe:2.5Gb/s:Width x1) 00:1e:67:9f:d4:25 [ 7.902484] igb 0000:04:00.0: eth1: PBA No: 102100-000 [ 7.902485] igb 0000:04:00.0: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s) [ 19.753325] igb 0000:03:00.0 eth0: igb: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX -- Cheers, Stephen Rothwell