Release Notes
Metric | Meaning | Description | Unit | Dimension | Statistical Periods |
ActiveThreadCount | Number of active threads | Instance-level metric, which is the sum of active threads in all the shards’ primary and replica nodes | Threads | InstanceId | 60s, 300s, 3600s, 86400s |
BinlogDiskAvailable | Available binlog disk space | Instance-level metric, which is the sum of the value of `BinlogDiskAvailableShard` in all the shards | GB | InstanceId | 60s, 300s, 3600s, 86400s |
BinlogUsedDisk | Used binlog disk space | Instance-level metric, whose value is the sum of binlog disk space used in all the shards’ primary nodes | GB | InstanceId | 60s, 300s, 3600s, 86400s |
ConnUsageRate | Connection usage | Instance-level metric, whose value is the highest connection usage among all the shards’ primary and replica nodes | % | InstanceId | 60s, 300s, 3600s, 86400s |
CpuUsageRate | CPU usage | Instance-level metric, whose value is the highest CPU usage in all the shards’ primary nodes | % | InstanceId | 60s, 300s, 3600s, 86400s |
DataDiskAvailable | Available data disk space | Instance-level metric, which is the sum of the available data disk space in all the shards’ primary nodes | GB | InstanceId | 60s, 300s, 3600s, 86400s |
DataDiskUsedRate | Data disk usage | Instance-level metric, whose value is the highest data disk usage in all the shards’ primary nodes | % | InstanceId | 60s, 300s, 3600s, 86400s |
DeleteTotal | Number of DELETE queries | Instance-level metric, which is the sum of DELETE queries executed in all the shards’ primary nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbBufferPoolReads | Number of InnoDB disk page reads | Instance-level metric, which is the sum of InnoDB disk page reads in all the shards’ primary and replica nodes | Times | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbBufferPoolReadAhead | Page read-ahead count of the InnoDB buffer pool | Instance-level metric, which is the sum of page read-aheads in the InnoDB buffer pool in all the shards’ primary and replica nodes | Times | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbBufferPoolReadRequests | Page read count of the InnoDB buffer pool | Instance-level metric, which is the sum of page reads in the InnoDB buffer pool in the instance's primary and replica nodes | Times | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbRowsDeleted | Number of rows deleted by InnoDB | Instance-level metric, which is the sum of rows deleted by InnoDB in all the shards’ primary nodes | Rows | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbRowsInserted | Number of rows inserted by InnoDB | Instance-level metric, which is the sum of rows inserted by InnoDB in all the shards’ primary nodes | Rows | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbRowsRead | Number of rows read by InnoDB | Instance-level metric, which is the sum of rows read by InnoDB in all the shards’ primary and replica nodes | Rows | InstanceId | 60s, 300s, 3600s, 86400s |
InnodbRowsUpdated | Number of rows updated by InnoDB | Instance-level metric, which is the sum of rows updated by InnoDB in all the shards’ primary nodes | Rows | InstanceId | 60s, 300s, 3600s, 86400s |
InsertTotal | Number of INSERT queries | Instance-level metric, which is the sum of INSERT queries executed in all the shards’ primary nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
LongQueryCount | Slow queries | Instance-level metric, which is the sum of slow queries executed in all the shards’ primary nodes | Queries | InstanceId | 60s, 300s, 3600s, 86400s |
MemAvailable | Available memory | Instance-level metric, which is the sum of available memory in all the shards’ primary nodes | GB | InstanceId | 60s, 300s, 3600s, 86400s |
MemHitRate | Cache hit ratio | Instance-level metric, whose value is the lowest cache hit ratio in all the shards’ primary nodes | % | InstanceId | 60s, 300s, 3600s, 86400s |
ReplaceSelectTotal | Number of REPLACE_SELECT queries | Instance-level metric, which is the sum of REPLACE-SELECT queries executed in all the shards’ primary nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
ReplaceTotal | Number of REPLACE queries | Instance-level metric, which is the sum of REPLACE queries executed in all the shards’ primary nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
RequestTotal | Total requests | Instance-level metric, which is the total number of queries executed in the instance's primary node plus the number of SELECT queries executed in the replica nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
SelectTotal | Number of SELECT queries | Instance-level metric, which is the sum of SELECT queries executed in all the shards’ primary and replica nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
SlaveDelay | Primary-replica synchronization delay | Instance-level metric. Instance-level synchronization delay is the delay of whichever shard has the longest delay, and shard-level synchronization delay is the shortest delay among the shard’s all replica nodes. | Sec | InstanceId | 60s, 300s, 3600s, 86400s |
UpdateTotal | Number of UPDATE queries | Instance-level metric, which is the sum of UPDATE queries executed in all the shards’ primary nodes | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
ThreadsConnected | Number of threads currently connected | Instance-level metric, which is the sum of threads currently connected in all the shards’ primary and replica nodes | Threads | InstanceId | 60s, 300s, 3600s, 86400s |
ConnMax | Maximum connections | Instance-level metric, which is the sum of the maximum number of connections of all the shards’ primary and replica nodes | Connections | InstanceId | 60s, 300s, 3600s, 86400s |
ClientConnTotal | Number of client connections | Instance-level metric, which is the sum of connections in the instance’s proxy. This metric represents the actual number of clients connected to the database instance. | Connections | InstanceId | 60s, 300s, 3600s, 86400s |
SQLTotal | Total number of SQL queries | Instance-level metric, which represents the number of SQL queries sent to the instance | Queries | InstanceId | 60s, 300s, 3600s, 86400s |
ErrorSQLTotal | SQL error count | Instance-level metric, which represents the number of queries with execution errors | Queries | InstanceId | 60s, 300s, 3600s, 86400s |
SuccessSQLTotal | Number of successful SQL queries | Instance-level metric, which represents the number of SQL queries executed successfully | Queries | InstanceId | 60s, 300s, 3600s, 86400s |
TimeRange0 | Number of queries that take shorter than 5 ms to execute | Instance-level metric, which represents the number of queries that take shorter than 5 ms to execute | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
TimeRange1 | Number of queries that take 5-20 ms to execute | Instance-level metric, which represents the number of queries that take 5-20 ms to execute | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
TimeRange2 | Number of queries that take 20-30 ms to execute | Instance-level metric, which represents the number of queries that take 20-30 ms to execute | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
TimeRange3 | Number of queries that take longer than 30 ms to execute | Instance-level metric, which represents the number of queries that take longer than 30 ms to execute | Queries/sec | InstanceId | 60s, 300s, 3600s, 86400s |
MasterSwitchedTotal | Number of primary node switchovers | Instance-level metric, which represents the number of times the primary node is switched | Times | InstanceId | 60s, 300s, 3600s, 86400s |
IOUsageRate | IO usage | Instance-level metric, whose value is the highest IO usage in all the shards’ primary nodes | % | InstanceId | 60s, 300s, 3600s, 86400s |
DescribeBaseMetrics API.Parameter | Dimension Name | Dimension Description | Format |
Instances.N.Dimensions.0.Name | instanceId | Dimension name of the instance ID | Enter a string-type dimension name: InstanceId |
Instances.N.Dimensions.0.Value | InstanceId | Instance ID | Enter an instance ID, e.g. tdsqlshard-9kjauqq1 |
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