FreeBSD 9.3 - Intel X520-SR2 stops passing packets

[Guy Helmer]

> On May 26, 2015, at 9:37 AM, Marcelo Gondim <gondim at bsdinfo.com.br> wrote:
> 
> On 23-05-2015 15:14, Babak Farrokhi wrote:
>> Look at the interrupts per queue. 500,000 is the maximum and it is the
>> reason your interface is not accepting new packets.
>> 
>>> Guy Helmer <mailto:guy.helmer at gmail.com>
>>> May 21, 2015 at 6:03 PM
>>> I’ve noticed that there have been reports of problems with Intel
>>> X520-SR2 network interfaces stopping working. I think I’m seeing a
>>> similar issue where the 10Gb interfaces stop receiving traffic
>>> (they’re being used in promiscuous mode to sniff traffic from a tap).
>>> ifconfig shows the interfaces are still active and the links are OK.
>>> ifconfig down/up restores activity. I’ve changed
>>> hw.intr_storm_threshold=8000 but I couldn’t tell if the interrupt
>>> storm threshold had been triggered at the time the interfaces stopped
>>> passing traffic.
>>> 
>>> Output from sysctl:
>>> 
>>> . . .
>> 
> Hi,
> 
> I had this problem and one day updated the system 10.1- RELEASE to 10.1- STABLE and the problem stopped. I was one years with this problem and a script running and testing the interface when the interface stopped working I was doing exactly what you did. Today I no longer have that problem anymore.
> 
> I'm using 10.1-STABLE r281235


Thanks for the indication of success with 10.1-STABLE. I am locked into using FreeBSD 9.x until I can go through the whole integration and acceptance testing cycle for 10.x, so I’m trying to find a solution that works on in 9.x. I have reviewed the diffs between 9.3 and 10.1-STABLE for ixgbe driver and haven’t noticed anything that stands out.

Regards,
Guy