PG_STATIO_SYS_TABLES
PG_STATIO_SYS_TABLES shows I/O status information about all the system catalogs in the namespace.
Table 1 PG_STATIO_SYS_TABLES columns
Name | Type | Description |
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relid | oid | Table OID |
schemaname | name | Name of the schema the table is in |
relname | name | Table name |
heap_blks_read | bigint | Number of disk blocks read from the table |
heap_blks_hit | bigint | Number of cache hits in the table |
idx_blks_read | bigint | Number of disk blocks read from all indexes in the table |
idx_blks_hit | bigint | Number of cache hits in indexes in the table |
toast_blks_read | bigint | Number of disk blocks read from the TOAST table (if any) in the table |
toast_blks_hit | bigint | Number of buffer hits in the TOAST table (if any) in the table |
tidx_blks_read | bigint | Number of disk blocks read from the TOAST table index (if any) in the table |
tidx_blks_hit | bigint | Number of buffer-hits in the TOAST table index (if any) in the table |
openGauss 2024-09-07 00:58:25