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BIOS setting for ATR for mitigating packet drops on DL360p Gen8 with Intel NIC?

 
Stefan Puiu
Advisor

BIOS setting for ATR for mitigating packet drops on DL360p Gen8 with Intel NIC?

Hi,

 

I'm currently working on an app that is meant to run on an HP DL360p Gen8 server and receive high rates of traffic (~4 Gbps) on one or two 10G NICs. It runs on Ubuntu 12.04 server 64 bit with the 3.11 kernel. The NICs we are using are shown by lspci as "HP Ethernet 10Gb 2-port 560SFP+ Adapter". Trouble is, I'm intermittently seeing packet drops, reported by ethtool -S as 'rx_no_dma_resources'. The drops are not very consistent - sometimes they show up, sometimes they don't depending on the run. I've set the HP Power Profile in the BIOS to "maximum performance" to no avail.

I checked the Intel ixgbe/driver forum  Sourceforge and the Intel guys are saying there's a BIOS setting that can help networking performance - "Extended ATR" or "Ageing Timer Rollover" (see below). I didn't find anything like this in the BIOS guide (I checked the "HP ROM-Based Setup Utility User Guide" from the DL360p support page). Is there an equivalent setting with a similar impact?
For the e1000 thread see here: http://sourceforge.net/p/e1000/mailman/message/31900862/

2 REPLIES
Suman_1978
HPE Pro

Re: BIOS setting for ATR for mitigating packet drops on DL360p Gen8 with Intel NIC?

Hi,

 

As far as I know, this setting is available with Intel System Boards using Intel BIOS.

This or similar to this setting is not available in HP BIOS.

 

I found this setting in Super Micro computer's system board "X9DR3-LN4F+ and X9DRi-LN4F+".

http://www.supermicro.com/manuals/motherboard/C606_602/MNL-1258.pdf

Page# 83

 

 

Thank You!
I am a HP employee.

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Stefan Puiu
Advisor

Re: BIOS setting for ATR for mitigating packet drops on DL360p Gen8 with Intel NIC?

Hi,

 

Thanks for replying. Any other settings that I might tweak? I've already looked at http://www8.hp.com/h20195/v2/GetDocument.aspx?docname=4AA4-9294ENW , even though it's a somewhat different NIC than what we're using.