On the host performance monitoring details page, you can view the monitoring data of nodes.
View host monitoring data
Log in to the ApsaraDB for OceanBase console.
In the left-side navigation pane, click Instances.
In the instance list, click the name of the target instance to go to the instance workspace.
In the left-side navigation pane of the instance workspace, click Performance Monitoring.
Click the Host Metrics tab.
By default, the host monitoring page displays the monitoring data of all nodes in the last hour.
You can select a node from the **Node** drop-down list to view its monitoring data. If you select multiple nodes, you can click node names in a chart to filter the data to view.
You can also specify a time period to filter the data to view.
The following table describes the performance metrics.
Metric display name | Metric | Description |
load | load1 | The average CPU load in the last 1 minute. |
CPU Percent | cpu_percent | The CPU utilization in percentage (%). |
Memory | memory_used | The size of physical memory used by the node. Unit: GB. |
Network Throughput | net_throughput | The network throughput of the node. Unit: MB. |
NTP clock offset | ntp_offset_milliseconds | The NTP clock offset of the node. Unit: ms. |
OceanBase Data Disk Usage Rate | ob_data_disk_percent | The data disk usage of the node in percentage (%). |
OceanBase Log Disk Usage Rate | ob_clog_disk_percent | The log disk usage of the node in percentage (%). |
Disk Usage | ob_data_disk_used_size | The size of used data disk space on the node. Unit: GB. |
OceanBase process status | ob_process_exists | The status of the observer process on the node. |
OB Clog Disk IOPS | ob_clog_io | The average number of I/O operations per second on the log disk of the node. |
OB Clog Disk IO Time | ob_clog_io_time | The average time spent on each I/O operation on the log disk of the node. Unit: ms. |
OB Clog IO Throughput | ob_clog_io_byte | The average I/O throughput per second of the log disk of the node. Unit: MB. |
OB Clog IO Util | ob_clog_io_util | The I/O usage of the log disk of the node in percentage (%). |
OB Data Disk IOPS | ob_data_io | The average number of I/O operations per second on the data disk of the node. |
OB Data Disk IO time | ob_data_io_time | The average time spent on each I/O operation on the data disk. Unit: ms. |
OB Data IO Throughput | ob_data_io_byte | The average I/O throughput per second of the data disk of the node. Unit: MB. |
OB Data IO Util | ob_data_io_util | The I/O usage of the data disk of the node in percentage (%). |