CPU stuck at 100 percent Linux
CPU stuck at 100 percent Linux is usually a signal that one of a small number of bottlenecks is active.
Common symptoms
- Slow response times
- High load
- Reduced throughput
Likely causes
- Hot process
- IO pressure
- Memory pressure
- Scheduling or contention
Evidence to look for
Sustained CPU elevation
Correlated process or host metrics
Repeated incident pattern
What it usually means
The key is distinguishing true compute saturation from hidden bottlenecks like disk, memory, or contention.
What to do next
- 1Identify the top process
- 2Check IO and memory pressure
- 3Correlate with events, deploys, or jobs
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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