Note
This view is available starting with V4.3.4.
Purpose
This view displays the metrics of various types of cached data in the local cache of each OBServer node for the current tenant in shared-storage mode.
Note
This view is available only in shared-storage (SS) mode. In shared-nothing (SN) mode, the query result of this view is empty.
Columns
| Column | Type | Nullable | Description |
|---|---|---|---|
| SVR_IP | varchar(46) | NO | The IP address of the OBServer node. |
| SVR_PORT | bigint(20) | NO | The port number of the OBServer node. |
| TENANT_ID | bigint(20) | NO | The tenant ID. |
| CACHE_NAME | varchar(128) | NO | The name of the cache for a specific type of data. The following types of caches are supported:
|
| PRIORITY | bigint(20) | NO | The cache priority. A larger value indicates a higher priority. This field is not currently used, and the default value is 0. |
| HIT_RATIO | decimal(38,3) | NO | The cache hit rate. |
| TOTAL_HIT_CNT | bigint(20) | NO | The total number of cache hits. |
| TOTAL_MISS_CNT | bigint(20) | NO | The total number of cache misses. |
| HOLD_SIZE | bigint(20) | NO | The total size of objects stored in the cache, in bytes. |
| ALLOC_DISK_SIZE | bigint(20) | NO | The allocated disk space, in bytes. |
| USED_DISK_SIZE | bigint(20) | NO | The used disk space (disk space may be allocated but not used). In bytes. |
| USED_MEM_SIZE | bigint(20) | NO | The used memory space, in bytes. |