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MDEV-28539 Some InnoDB counters are duplicating generic SHOW STATUS

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The InnoDB srv_stats counters
n_rows_updated, n_rows_deleted, n_rows_inserted, and n_rows_read
are duplicating
Handler_update, Handler_delete, Handler_write, and Handler_read_ counters.

Updating those counters is not free, especially because some counters
are furthermore split to distinguish a rare case of modifying tables
in the system schema.
This commit is contained in:
Marko Mäkelä
2022-05-13 16:39:45 +03:00
parent 6b9bba41e8
commit 0dab74ff3f
16 changed files with 6 additions and 882 deletions
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9
mysql-test/suite/innodb/r/innodb.result
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@@ -1694,15 +1694,6 @@ OK
SELECT variable_value FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_page_size';
variable_value
16384
SELECT variable_value - @innodb_rows_deleted_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_deleted';
variable_value - @innodb_rows_deleted_orig
71
SELECT variable_value - @innodb_rows_inserted_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_inserted';
variable_value - @innodb_rows_inserted_orig
964
SELECT variable_value - @innodb_rows_updated_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_rows_updated';
variable_value - @innodb_rows_updated_orig
865
SELECT variable_value - @innodb_row_lock_waits_orig FROM information_schema.global_status WHERE LOWER(variable_name) = 'innodb_row_lock_waits';
variable_value - @innodb_row_lock_waits_orig
0