Note
- This view is available starting with V4.3.5 for V4.3.x.
- This view is available starting with V4.2.2 for V4.2.x.
Purpose
The CDB_WR_SYS_TIME_MODEL view displays the WR data of Time Model statistics for all tenants.
Columns
| Column | Type | Nullable? | Description |
|---|---|---|---|
| CLUSTER_ID | bigint(20) | NO | The cluster ID. |
| TENANT_ID | bigint(20) | NO | The tenant ID. |
| SNAP_ID | bigint(20) | NO | The snapshot ID. |
| SVR_IP | varchar(46) | NO | The IP address of the node. |
| SVR_PORT | bigint(20) | NO | The port number of the node. |
| STAT_ID | bigint(20) | NO | The ID of the statistic. |
| STAT_NAME | varchar(64) | NO | The name of the statistic. |
| VALUE | bigint(20) | NO | The value of the statistic. |
The following table describes the values in the STAT_NAME column of the view.
| Statistic Name | Description | Statistic ID | Statistic Type |
|---|---|---|---|
| DB time | The total time spent on database activities, including CPU and non-idle wait times. | 200001 | 3072 |
| DB CPU | The time spent on CPU activities in the database. | 200002 | 3072 |
| background elapsed time | The total time spent on background processes. | 200005 | 3072 |
| background cpu time | The CPU time spent on background processes. | 200006 | 3072 |
| non idle wait time | The total time spent on non-idle waits, i.e., the time when sessions are in a waiting state but not in idle wait. | 200010 | 3072 |
| idle wait time | The total time spent on idle waits, i.e., the time when sessions are in an idle wait state. | 200011 | 3072 |
| background database time | The total time spent on database operations by background processes. | 200012 | 3072 |
| background database non-idle wait time | The time spent on database operations by background processes in a non-idle wait state. | 200013 | 3072 |
| background database idle wait time | The time spent on database operations by background processes in an idle wait state. | 200014 | 3072 |
| concurrency wait total time | The total time spent on waits caused by concurrency issues, such as waiting for resource locks. | 220001 | 3072 |
| user io wait total time | The total time spent on I/O operations by user processes, such as reading or writing data to disk. | 220002 | 3072 |
| application wait total time | The total time spent on waits caused by user application code, such as lock waits due to row-level locks or explicit lock commands. | 2200013 | 3072 |
Sample query
Query the WR data of Time Model statistics for all tenants and display the first 10 rows.
obclient [oceanbase]> SELECT * FROM oceanbase.CDB_WR_SYS_TIME_MODEL LIMIT 10;
The query result is as follows:
+------------+-----------+---------+----------------+----------+---------+-------------------------+-----------+
| CLUSTER_ID | TENANT_ID | SNAP_ID | SVR_IP | SVR_PORT | STAT_ID | STAT_NAME | VALUE |
+------------+-----------+---------+----------------+----------+---------+-------------------------+-----------+
| 10001 | 1002 | 2 | 172.xx.xxx.xxx | 2882 | 200001 | DB time | 34505 |
| 10001 | 1002 | 1 | 172.xx.xxx.xxx | 2882 | 200001 | DB time | 34505 |
| 10001 | 1002 | 2 | 172.xx.xxx.xxx | 2882 | 200002 | DB CPU | 1966 |
| 10001 | 1002 | 1 | 172.xx.xxx.xxx | 2882 | 200002 | DB CPU | 1966 |
| 10001 | 1002 | 2 | 172.xx.xxx.xxx | 2882 | 200005 | background elapsed time | 233110335 |
| 10001 | 1002 | 1 | 172.xx.xxx.xxx | 2882 | 200005 | background elapsed time | 116267272 |
| 10001 | 1002 | 2 | 172.xx.xxx.xxx | 2882 | 200006 | background cpu time | 209738761 |
| 10001 | 1002 | 1 | 172.xx.xxx.xxx | 2882 | 200006 | background cpu time | 104674501 |
| 10001 | 1002 | 1 | 172.xx.xxx.xxx | 2882 | 200010 | non idle wait time | 32539 |
| 10001 | 1002 | 1 | 172.xx.xxx.xxx | 2882 | 200011 | idle wait time | 0 |
+------------+-----------+---------+----------------+----------+---------+-------------------------+-----------+
10 rows in set
