PG_STATIO_SYS_TABLES¶
PG_STATIO_SYS_TABLES displays the I/O status information about all the system catalogs in the namespace.
Name | Type | Description |
---|---|---|
relid | oid | Table OID |
schemaname | name | Schema name of the table |
relname | name | Name of a table |
heap_blks_read | bigint | Number of disk blocks read from this table |
heap_blks_hit | bigint | Number of buffer hits in this table |
idx_blks_read | bigint | Number of disk blocks read from the index in this table |
idx_blks_hit | bigint | Number of buffer hits in all indexes on this table |
toast_blks_read | bigint | Number of disk blocks read from the TOAST table (if any) in this table |
toast_blks_hit | bigint | Number of buffer hits in the TOAST table (if any) in this table |
tidx_blks_read | bigint | Number of disk blocks read from the TOAST table index (if any) in this table |
tidx_blks_hit | bigint | Number of buffer hits in the TOAST table index (if any) in this table |