Note
This view is available starting with V4.3.4.
Purpose
This view displays the I/O statistics of Function-level tasks for the current tenant on the current OBServer node. If the resource group corresponding to the background task at the Function level has not enabled the resource management plan, the displayed I/O information is only for reference, and the corresponding resources cannot be limited.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| SVR_IP | varchar(46) | NO | The IP address of the server. |
| SVR_PORT | bigint(20) | NO | The port number of the server. |
| TENANT_ID | bigint(20) | NO | The tenant ID. |
| FUNCTION_NAME | varchar(32) | NO | The name of the background task corresponding to the Function:
|
| MODE | varchar(32) | NO | The read/write mode of the I/O operation (remote requests for shared storage, local requests for other types):
|
| SIZE | bigint(20) | NO | The average I/O size. |
| REAL_IOPS | bigint(20) | NO | The actual IOPS. |
| REAL_MBPS | bigint(20) | NO | The actual bandwidth, in MB/s. |
| SCHEDULE_US | bigint(20) | NO | The average time consumed by I/O scheduling, in us. |
| IO_DELAY_US | bigint(20) | NO | The average execution time of the disk I/O, in us. |
| TOTAL_US | bigint(20) | NO | The overall average execution time of the I/O, in us. |
Sample query
Query the I/O statistics of the current tenant at the Function level on the current OBServer node.
obclient [oceanbase]> SELECT * FROM oceanbase.V$OB_FUNCTION_IO_STAT LIMIT 5;
The query result is as follows:
+----------------+----------+-----------+------------------+--------------+------+-----------+-----------+-------------+-------------+----------+
| SVR_IP | SVR_PORT | TENANT_ID | FUNCTION_NAME | MODE | SIZE | REAL_IOPS | REAL_MBPS | SCHEDULE_US | IO_DELAY_US | TOTAL_US |
+----------------+----------+-----------+------------------+--------------+------+-----------+-----------+-------------+-------------+----------+
| 172.xx.xxx.xxx | 2882 | 0 | DEFAULT_FUNCTION | LOCAL READ | 0 | 0 | 0 | 0 | 0 | 0 |
| 172.xx.xxx.xxx | 2882 | 0 | DEFAULT_FUNCTION | LOCAL WRITE | 4096 | 2 | 0 | 20 | 142 | 178 |
| 172.xx.xxx.xxx | 2882 | 0 | DEFAULT_FUNCTION | REMOTE READ | 0 | 0 | 0 | 20 | 142 | 178 |
| 172.xx.xxx.xxx | 2882 | 0 | DEFAULT_FUNCTION | REMOTE WRITE | 0 | 0 | 0 | 20 | 142 | 178 |
| 172.xx.xxx.xxx | 2882 | 0 | COMPACTION_HIGH | LOCAL READ | 0 | 0 | 0 | 20 | 142 | 178 |
+----------------+----------+-----------+------------------+--------------+------+-----------+-----------+-------------+-------------+----------+
5 rows in set
References
Query the I/O statistics of the current tenant at the Function level on all OBServer nodes: GV$OB_FUNCTION_IO_STAT
Query the real-time status of each resource group of the tenant:
For more information about resource isolation, see the following topics: