Fix IOPS Issues
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System and disk alert conditions can indicate IOPS issues.
Alert Conditions
System: CPU (User) % is measures the CPU usage of the
processes on the node, normalized by the number of CPUs. This value is
scaled to a range of 0-100%.
Common Triggers
A few common events may trigger these alerts:
A one-time event, such as an index build.
Fix the Immediate Problem
Consider the following resolutions:
Use the MongoDB Atlas Performance Advisor to view slow queries and suggested indexes.
Implement a Long-Term Solution
Review Indexing Strategies for possible further indexing improvements.
Note
A temporary spike in disk utilization may result when creating new indexes.
Analyze Query Performance to review how your queries are using your indexes.
Use a faster disk drive with more hardware resources.
Move operations from disks with large workloads to different disks.
Monitor Your Progress
To observe high disk utilization, open the Hardware Metrics section of the Metrics tab and find the following metrics:
Graph | Indicator |
|---|---|
Disk IOPS | IOPS value greater than the provisioned IOPS value |
Normalized System CPU | High IOWait curve IOWait measures the percentage of time the CPU runs idle waiting for an I/O operation to complete. |
To learn more, see View Deployment Metrics.