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View monitoring information

Last Updated: Feb 24, 2018

The MongoDB console provides various performance monitoring metrics so that you can analyze the running status of the instance.


  • The system collects monitoring data every five minutes.

  • You can query monitoring data of the last 30 days.


  1. Log on to the MongoDB console.

  2. Locate the target instance and click its ID or Manage in the operation column to display the Basic Information page.

  3. In the left-side navigation pane, click Monitoring Information.

    Monitoring information

    You can set the time range and select a monitoring metric.

Monitoring metrics

Monitoring metricDescription
CPU UsageCPU usage of the instance
Memory UsageMemory usage of the instance
IOPS Usage Used IOPS, including:
- Data disk IOPS
- Log disk IOPS
IOPS UsageRatio of used IOPS to maximum available IOPS
Disk Space Usage Occupied disk space, including:
- Total used space
- Occupied data disk space
- Occupied log disk space
Disk space usageRatio of total used space to maximum available space
opcounters Number of performed operations per second, including:
- Number of insert operations
- Number of queries
- Number of delete operations
- Number of update operations
- Number of getmore operations
- Number of commands
connectionsNumber of current connections
cursorsNumber of cursors, including:
- Number of open cursors
- Number of timed out cursors
networkNetwork traffic, including:
- Received traffic
- Sent traffic
- Number of handled requests
globalLockNumber of operations queued waiting for the lock
- Number of operations that are currently queued and waiting for the read lock
- Number of operations that are currently queued and waiting for the write lock
- Total number of operations queued waiting for the lock
wiredTigerwiredTiger engine cache data, including:
- Volume of data read into the cache
- Volume of data written from the cache
- Maximum cache size
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