Thank You for the update.

A quick update.
This morning we had another crash. Same host, same guest involved.

@r1 yes for sure.
Here: https://cloud.sinapto.net/index.php/s/0X8GdLxnTrw6bmd the output pf get-cpu-idle-states.
Power management is set up for maximun performance, power cap is disabled.
The system is a Dell poweredge r640.
Let me know if you need more details.
Steve

Yes,
here: https://cloud.sinapto.net/index.php/s/13nUsnunRKmdUBC
you can find crash log. For what I can understand it is related to an host which was pv with an older version of the tools (7.2). After last crash I've update tools to the latest version hoping that this will fix the issue.
All the crashes (4 so far, on 2 different xcp hosts) happened outside peak hours for our infrastructure (friday evening after business hours and saturday during lunch) so I don't think is load average related but I'm not certain about it.
Let me know if you need further informations.
Thanks
Steve

I already updated it.
[root@vivhv11 20190301-211627-CET]# rpm -q openvswitch
openvswitch-2.5.3-2.2.3.3.xcpng.x86_64
and it crashed afterward.

Exact same situation here.
2 different host both crashed, I suspect is one of the vm because I've moved them from the first one that crashed to second one.
Let me know if you found something to address this issue.
Many thanks.