Classification | Metric Name | Unit | Descriptions |
CPU | CPU Usage | % | Percentage of actual CPU consumption |
Memory | Memory Usage | MB | Total memory usage |
| Max Memory | KB | Max memory |
| Memory Usage Rate | % | Memory usage rate |
| Internal System Locked Memory | KBytes | Internal system locked memory This monitoring metric can be viewed only in 2014 and later versions. |
| Internal System Consumed Memory | KBytes | Internal system consumed memory This monitoring metric can be viewed only in 2014 and later versions. |
Storage | Disk Throughput | KBytes/s | The total size of data written and read to the disk per second (for monitoring machines deployed with dual node cloud disk instances) |
| Disk Read Traffic | KBytes/s | Amount of data read from disk to memory per second (for monitoring machines deployed with dual node cloud disk instances) |
| Disk Write Traffic | KBytes/s | Amount of data written from memory to disk per second (for monitoring machines deployed with dual node cloud disk instances) |
| Disk IOPS | Times/sec | Number of disk read and write times |
| Number of Disk Read Times | Times/sec | Number of disk read times per second |
| Number of Disk Write Times | Times/sec | Number of disk write times per second |
| Used Storage | GB | Sum of storage space consumed by instance database files and log files |
| Remaining Storage Space | % | Percentage of remaining hard disk capacity, calculated as: (Purchased disk - Used storage space) / Purchased disk |
| Read IO Average Response Time | ms | Average time in seconds required to read data on disk (for monitoring machines deployed with dual node cloud disk instances) |
| Write IO Average Response Time | ms | Average time in seconds required to write data on disk (for monitoring machines deployed with dual node cloud disk instances) |
| IO Request Average Response Time | ms | Average response time per IO request (for system-level monitoring of machines deployed with dual node local disk instances) |
| Number of Read IOs Per Second on Disk | Times/sec | Number of read IOs per second on disk (for system-level monitoring of machines deployed with dual node local disk instances) |
| Number of Write IOs Per Second on Disk | Times/sec | Number of write IOs per second on disk (for system-level monitoring of machines deployed with dual-node local disk instances) |
| Total Disk IOPS | Times/sec | Total IOPS on disk (for system-level monitoring of machines deployed with dual-node local disk instances) |
| Disk Queue Length | Count | Disk queue length (for system-level monitoring of machines deployed with dual-node local disk instances) |
Network | Inbound Traffic | KB/s | Sum of inbound packet sizes for all connections |
| Outbound Traffic | KB/s | Sum of outbound packet sizes for all connections |
| Average Network I/O Delay | ms | Average network I/O delay time |
| RO Sync Delay Time | Sec | Data sync delay time between primary instances and read-only instances |
Connection | Number of Connections | Connections | Average number of databases connected by users per second |
| Number of Logins Per Second | Times/sec | Number of logins per second |
| Number of Logouts Per Second | Times/sec | Number of logouts per second |
Access | Slow Queries | Queries | Number of queries running longer than one second |
| Number of Requests | Times/sec | Average number of requests per second |
| Number of SQL Compilations | Times/sec | Average number of SQL compilations per second |
| Number of SQL Recompilations | Times/sec | Average number of SQL recompilations per second |
| Number of Full-Table Scans for SQL Per Second | Times/sec | Number of full-table scans for SQL per second |
| Number of Transactions | Times/sec | Average number of transactions per second |
| Number of Blockings | Blockings | Number of current blockings |
| Execution Cache Hit Rate | % | Each SQL statement has an execution plan, the hit rate of the execution plan. |
| Buffer Cache Hit Rate | % | Data cache (memory) hit rate |
Lock | Number of Lock Requests | Times/sec | Average number of lock requests per second |
| Number of Latch Waits Per Second | Times/sec | Number of latch waits per second |
| Average Latency on a Lock Wait | Ms | Average wait time of each lock request resulting in wait |
| Number of Deadlocks | Number/sec | Number of lock requests causing deadlocks per second |
| Blocking Report Generation Threshold | Minute | The specified threshold for generating blocking reports. If the threshold is exceeded, a blocked process report will be generated. By default, blocking process reports are not generated. |
Others | Number of User Errors | Times/sec | Average number of errors per second |
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