Hi Coherence Community,
During my recent load test I have noticed a growing amount of tasks in the Coherence backlog:


As a result the test ended up with timeouts occurred for all Coherence calls.
Unfortunately, I wasn't able to find any errors or warning messages in the Coherence logs. So, I have no idea what was a reason of the issue. All the checked Coherence-related metrics (memory utilization, network health, system's resources) seem good.
Could you please help me with an advice how can I proceed with my investigation? What logging or reporting should be enabled to debug it?
Some information regarding my current setup
Integration type: Extend Client (proxy model)
Num of storage nodes: 3
Num of proxy nodes: 3
Cache 1 type: Write-Behind
Cache 2 type: Read-Through