The ApsaraDB for MongoDB console provides a wide range of performance monitoring data for you to conveniently view and understand the running status of your instances.

Procedure

  1. Log on to the ApsaraDB for MongoDB console.
  2. In the upper-left corner of the home page, select the region where the target instance is located.
  3. In the left-side navigation pane, click Replica Set Instances or Sharding Instances based on the architecture of the target instance.
  4. Locate the target instance and click its instance ID.
  5. In the left-side navigation pane, click Monitoring Info.
  6. On the Monitoring Info page that appears, the monitoring data of the last 24 hours is displayed by default. You can also specify a time range to view the historical monitoring data.

    Note
    • If the target instance is a replica set instance, you can select Primary or Secondary to view the monitoring information about the primary node or a secondary node.
    • If the target instance is a sharded cluster instance, you can select Mongos or Shard to view the monitoring information about the selected node.

Metrics

Metric Description
CPU Usage The CPU usage of the instance.
Memory Usage The memory usage of the instance.
IOPS Usage The input/output operations per second (IOPS) of the instance, including:
  • The IOPS on the data disk.
  • The IOPS on the log disk.
IOPS Usage The ratio of the IOPS of the instance to the maximum IOPS.
Disk Space Usage The disk space usage of the instance, including:
  • The total disk space usage.
  • The disk space usage on the data disk.
  • The disk space usage on the log disk.
Disk Space Usage The ratio of the total disk space usage of the instance to the maximum available disk space.
Opcounters The queries per second (QPS) of operations on the instance, including:
  • The number of insert operations.
  • The number of query operations.
  • The number of delete operations.
  • The number of update operations.
  • The number of getmore operations.
  • The number of commands.
Connections The current number of connections to the instance.
Cursors The current number of cursors used by the instance, including:
  • The number of currently opened cursors.
  • The number of timed-out cursors.
Network The network traffic of the instance, including:
  • The inbound traffic.
  • The outbound traffic.
  • The number of processed requests.
GlobalLock The number of operations that are currently queued and waiting for the global lock, including:
  • The number of operations queued waiting for the read lock.
  • The number of operations queued waiting for the write lock.
  • The total number of operations queued waiting for the global lock.
WiredTiger The statistics on the cache of the WiredTiger storage engine, including:
  • The amount of data read into the cache.
  • The amount of data written from the cache.
  • The maximum configured size of the cache.