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Packet drops on KVM guest
Hey guys,
got aware of this rather strange behaviour of a KVM guest this day:
In plain words:
There seems to be a pretty constant drop rate on my bridged network interface of the KVM guest,
but on the host node everything seems fine.
Tried to ping for a few minutes and used the service provided by this box -> no problems.
I found some bug reports online regarding a similiar problem, but that dated back a few years and where related to an older kernel version...
Maybe this is a rather common problem and I am just to inexperienced - do you have any suggestions?
Regards, Bochi
Comments
All interrupts are handled by one core, but that should be fine - affinity is set accordingly.
And load on the systems (node and guest) is well below 0.1, so this shouldn't be a problem.
There should be no QoS in place, checked the guest's XML.
Seems alright to me, same on host.
Guest is mostly idling, but checked that too: no flooding...
Thank you very much for your effort so far!
Checked the actual ratio and it seems to be quite low:
But nevertheless it somehow annoys me. :P
Especially as long as I don't know the reason for this... Any other suggestions?