Download Basic Blade Services Software on ATCA

Linux Distribution Description
5. Limit the C-States in BIOS and OS in order to avoid the cores going away to sleep. This can
be done by adding “idle=nomwait” to the kernel command line and via BIOS settings.
(See BIOS->Advanced->CPU Configuration)
6. The Intel 82576 2x1GbE Controller on the Base Interface can be configured to use more
than one receive and transmit queues. Eight queues are used by setting the RSS parameter
to '0'. (See also Readme file of the Intel 82576)
Example of the kernel command line used for network boot:
DEFAULT ATCA7365/kernel ramdisk_size=716800 vga=0x317
console=ttyS0,9600 initrd=ATCA7365/ramdisk.image.gz root=/dev/ram0
ip=none ro idle=nomwait pci=lastbus=255 igb.RSS=0,0,0,0,0,0,0,0
igb.InterruptThrottleRate=3000,3000,3000,3000,3000,3000,3000,3000
The igb driver is now configured to support multiple queues.
By default, the Intel 82599 2x10GbE is already configured to use up to 32 queues.
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Basic Blade Services Software on ATCA-7360/7365 Programmer’s Reference (6806800K42E)