HA load balancing almost stops processing v6 packets after a while
@wlodek recently implemented extended HA stability tests and the results are worrisome. It seems that load balancing in v6 stops sending responses after a short while. This affects the following scenarios:
- load balancing memfile v6
- load balancing mysql v6
- load balancing postgresql v6
Open the report report-ha-1.9.11-master.html, and go to
HA stability tab. For example, see "load balancing memfile v6". These are charts 8-A and 8-B. Note the green (advertise-received) and violet lines (reply-received) on 8-A, which behaves correctly for roughly 9 seconds (~11k advertises and replies/sec) and then degrades down to zero. Note the green line has almost exactly the same values (which is expected) so it may be hard to see. You can click on the legend to hide and show various lines.
This is not complete stop. There are some responses - around 20/s, which compared to 11000/s when the test started is enormous degradation.