luhuayi
177cd61a57
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: luhuayi <luhuayi@huawei.com> Co-committed-by: luhuayi <luhuayi@huawei.com>
8.7 KiB
GLOBAL_COLUMN_TABLE_IO_STAT
GLOBAL_COLUMN_TABLE_IO_STAT provides I/O statistics of all column-store tables in the current database. The names, types, and sequences of the columns in the view are the same as those in the GS_COLUMN_TABLE_IO_STAT view. For details about the columns, see Table 1. The value of each statistical column is the sum of the values of the corresponding columns of all nodes.
Column |
Type |
Description |
|---|---|---|
schemaname |
Name |
Namespace of a table |
relname |
Name |
Table name |
heap_read |
Bigint |
Number of blocks logically read in the heap |
heap_hit |
Bigint |
Number of block hits in the heap |
idx_read |
Bigint |
Number of blocks logically read in the index |
idx_hit |
Bigint |
Number of block hits in the index |
cu_read |
Bigint |
Number of logical reads in the Compression Unit |
cu_hit |
Bigint |
Number of hits in the Compression Unit |
cidx_read |
Bigint |
Number of indexes logically read in the Compression Unit |
cidx_hit |
Bigint |
Number of index hits in the Compression Unit |