Some updates:
After tweaking kernel parameters mentioned in Stream documentation I noticed some improvement.
We still have gaps every 2 hours, but those gaps last for 2 minutes.
This are the parameters:
(Before - Default)
net.core.rmem_default = 212992
net.core.rmem_max = 212992
net.core.netdev_max_backlog = 1000
(After)
net.core.rmem_default = 33554432
net.core.rmem_max = 33554432
net.core.netdev_max_backlog = 10000
Documentation suggests those parameters for high-volume packet capture. I'm not entirely sure of what's going on, as I don't think we have that amount of traffic.
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