Database causing high CPU
Databases are one of the most common sources of high CPU, but the actual cause may be query plans, disk latency, or poor cache behavior.
Common symptoms
- Database process leads CPU charts
- API latency follows query volume
- CPU spikes during reporting or jobs
Likely causes
- Expensive queries
- Poor indexing
- Disk or memory bottlenecks
Evidence to look for
Database PID remains top consumer
IO and await metrics rise with load
Specific endpoints or jobs correlate with spikes
What it usually means
A database can look CPU-hot because the whole stack is backing up around it.
What to do next
- 1Separate compute from storage bottlenecks
- 2Inspect query plans first
- 3Correlate DB spikes with app activity and disk pressure
See what's causing your CPU
cpum.ai turns CPU, process, disk, and memory signals into plain-English explanations with evidence.
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