Hi Wang
did you update from a previous pf_ring version that was working with no crashes?
Can I see the zcount command line which is causing this?
Weird this is happening with X520 and not happening with 82599 as they should
behave the same, need to investigate. What 7.6 version are you running exactly?
Could you provide cat /proc/net/pf_ring/info?

Thank you
Alfredo

> On 11 May 2020, at 04:44, Wang <[email protected]> wrote:
> 
> Hello,
> I installed PF Ring ZC 7.6.0 on a centos 7 box. When I configured the ixgde 
> driver with RSS queue number to 8, the centos kernel would crash after zcount 
> worked for hours. This would happen only when the RSS queue configured to 
> more than 1 and the more queue number it configured, the more frequent this 
> would happen.
> The kernel is 3.10.0-1062.9.1.el7.x86_64 and the NIC is a intel X520 duel 
> port. 
> I also installed a intel 82599 duel port and it works fine, it appeared there 
> was something wrong with x520 and pfring zc driver.
> 
> Any comment? 
> 
> Regards,
> Wang
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