RDS volume - Latency & I/O spikes
we are experiencing sudden spikes in read/write latency and queue depth on a production PostgreSQL instance. There is no increase in connections, workloads, web layer traffic, cronjobs, etc. We saw the physical device read/write IOs plummet on Enhanced Monitoring.
We think there to be a degradation issue with volume.
we found that it will return to normal every 5mins in our web apps apm monitor.
Can someone from AWS please look into this ASAP?
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This may require other details , so we would recommend to open a support case so that it can be looked/troubleshooted in more detail. In the meantime, you can also check
Check the database, to see what is causing the spikes. Performance Insights would help.https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_PerfInsights.html. With Postgres, Vacuum can be causing unexpected I/O .
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