10gbe ixgbe slow at 420mbyte/s max, p2p lan cat8 1m, tried ethtool and ifconfig options to no avail Post: 303045736

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Top Forums UNIX for Beginners Questions & Answers 10gbe ixgbe slow at 420mbyte/s max, p2p lan cat8 1m, tried ethtool and ifconfig options to no avail Post 303045736 by the-architect on Saturday 11th of April 2020 08:42:45 AM

04-11-2020

Registered User

Thank's for figuring out the problem and giving feedback. Never had this myself. Good to know!

Very interesting indeed...

Code:

lspci -vv 2>/dev/null | gawk '/^[0-9a-f]+/ {dev=$0} match($0,/LnkSta.*idth x([0-9]+)/,r) {if(r[1]>0) {printf "%-6s %s\n","x"r[1],dev}} '

#lanes #pci-id   #device-name

x8     00:01.0   PCI bridge: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 1a (rev 04) (prog-if 00 [Normal decode])
x8     00:03.2   PCI bridge: Intel Corporation Xeon E7 v2/Xeon E5 v2/Core i7 PCI Express Root Port 3c (rev 04) (prog-if 00 [Normal decode])
x1     00:11.0   PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Virtual Root Port (rev 06) (prog-if 00 [Normal decode])
x8     01:00.0   RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2208 [Thunderbolt] (rev 05)
x8     05:00.0   Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
x8     05:00.1   Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
x1     07:00.0   Serial Attached SCSI controller: Intel Corporation C602 chipset 4-Port SATA Storage Control Unit (rev 06)

Last edited by the-architect; 04-11-2020 at 10:15 AM..

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LEARN ABOUT FREEBSD

if_ixgbe

IXGBE(4)						   BSD Kernel Interfaces Manual 						  IXGBE(4)

NAME

     ixgbe -- Intel(R) 10Gb Ethernet driver for the FreeBSD operating system

SYNOPSIS

     To compile this driver into the kernel, place the following line in your kernel configuration file:

	   device ixgbe

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   if_ixgbe_load="YES"

DESCRIPTION

     The ixgbe driver provides support for PCI 10Gb Ethernet adapters based on the Intel 82598EB Intel(R) Network Connections.	The driver sup-
     ports Jumbo Frames, MSIX, TSO, and RSS.

     For questions related to hardware requirements, refer to the documentation supplied with your Intel 10GbE adapter.  All hardware requirements
     listed apply to use with FreeBSD.

     Support for Jumbo Frames is provided via the interface MTU setting.  Selecting an MTU larger than 1500 bytes with the ifconfig(8) utility
     configures the adapter to receive and transmit Jumbo Frames.  The maximum MTU size for Jumbo Frames is 16114.

     This driver version supports VLANs.  For information on enabling VLANs, see ifconfig(8).

HARDWARE

     The ixgbe driver supports the following cards:

     o	 Intel(R) 10 Gigabit XF SR/AF Dual Port Server Adapter
     o	 Intel(R) 10 Gigabit XF SR/LR Server Adapter
     o	 Intel(R) 82598EB 10 Gigabit AF Network Connection
     o	 Intel(R) 82598EB 10 Gigabit AT CX4 Network Connection

DIAGNOSTICS

     ixgbe%d: Unable to allocate bus resource: memory  A fatal initialization error has occurred.

     ixgbe%d: Unable to allocate bus resource: interrupt  A fatal initialization error has occurred.

     ixgbe%d: watchdog timeout -- resetting  The device has stopped responding to the network, or there is a problem with the network connection
     (cable).

SUPPORT

     For general information and support, go to the Intel support website at: http://support.intel.com.

     If an issue is identified with the released source code on the supported kernel with a supported adapter, email the specific information
     related to the issue to <freebsd@intel.com>.

SEE ALSO

     altq(4), arp(4), netintro(4), ng_ether(4), polling(4), vlan(4), ifconfig(8)

HISTORY

     The ixgbe device driver first appeared in FreeBSD 7.0.

AUTHORS

     The ixgbe driver was written by Intel Corporation <freebsd@intel.com>.

BSD
								 December 19, 2010							       BSD