overcommit ratio on latest server i had the problem is 3.6 (3.6 vcpu for
each cpu), would that be part of the problem? i see other servers that
never had the problem with over commit ratios as high as 4.1
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Public bug reported:
we are having a problem in our hosts, all the vm running on them
suddenly, and for some seconds, lost network connectivity.
the root cause appears to be the increase of irb-tlb from low values
(less than 20) to more than >100k, that spike only last for some seconds
then ever
maybe first part is not clear, here it goes again
this happens on some hypervisors at random times, not all hypervisors
at the same time, and affects all vm on the hypervisor
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