This topic describes the metrics for PolarDB for PostgreSQL.
When you call an API operation provided by CloudMonitor, set the Namespace and Period parameters.
- Set the Namespace parameter to acs_polardb.
- Set the Period parameter to an integral multiple of 60. Default value: 60. Unit: seconds.
The following table describes the valid values of the MetricName and Dimensions parameters.
| Metric | Unit | MetricName | Dimensions |
|---|---|---|---|
| pg_active_connections | Count | pg_active_connections | userId, clusterId, and instanceId |
| BlockRead | Count | pg_blks_read_delta | userId, clusterId, and instanceId |
| pg_conn_usage | % | pg_conn_usage | userId, clusterId, and instanceId |
| pg_cpu_total | % | pg_cpu_total | userId, clusterId, and instanceId |
| PG_DBAge | xids | pg_db_age | userId, clusterId, and instanceId |
| PG_MemoryUtilization | % | pg_mem_usage | userId, clusterId, and instanceId |
| pg_pls_data_size | MB | pg_pls_data_size | userId, clusterId, and instanceId |
| pg IOPS | Frequency | pg_pls_iops | userId, clusterId, and instanceId |
| pg_pls_iops_read | Frequency | pg_pls_iops_read | userId, clusterId, and instanceId |
| pg_pls_iops_write | Frequency | pg_pls_iops_write | userId, clusterId, and instanceId |
| pg_pls_pg_wal_dir_size | MB | pg_pls_pg_wal_dir_size | userId, clusterId, and instanceId |
| pg_pls_throughput | MB/s | pg_pls_throughput | userId, clusterId, and instanceId |
| pg_pls_throughput_read | MB/s | pg_pls_throughput_read | userId, clusterId, and instanceId |
| pg_pls_throughput_write | MB/s | pg_pls_throughput_write | userId, clusterId, and instanceId |
| pg_rollback_ratio | % | pg_rollback_ratio | userId, clusterId, and instanceId |
| pg_swell_time | s | pg_swell_time | userId, clusterId, and instanceId |
| pg TPS | Frequency | pg_tps | userId, clusterId, and instanceId |