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Knowledge Base & Operational DocumentationWhy Does a Linux Server Have High Load but Low CPU Usage?
High load average does not always mean processors are busy. Tasks waiting on disk, network storage, locks, or other uninterruptible work can raise load while CPU utilization remains low, making a simple CPU upgrade ineffective.
What to check
Compare load average with CPU states, process wait channels, disk latency, filesystem health, network mount status, and blocked process counts. Check whether the problem follows a storage volume or begins after a scheduled task.
Recommended next step
Address the resource that tasks are waiting for and verify the effect using latency and queue metrics. Capture diagnostic output during the event, since a later snapshot may miss a short-lived storage stall.
How Informatix Systems can help
Informatix Systems provides Linux server performance and administration services. We can review the affected systems and workflow, help identify likely causes, and outline a practical implementation path. Contact us with the platform involved, when the issue began, and non-sensitive error details.