diff options
Diffstat (limited to 'mysql-test/main/mysqld--help.result')
| -rw-r--r-- | mysql-test/main/mysqld--help.result | 45 |
1 files changed, 33 insertions, 12 deletions
diff --git a/mysql-test/main/mysqld--help.result b/mysql-test/main/mysqld--help.result index 55a316aca55..cc62e406e26 100644 --- a/mysql-test/main/mysqld--help.result +++ b/mysql-test/main/mysqld--help.result @@ -720,11 +720,15 @@ The following specify which files/extra groups are read (specified before remain max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of file descriptors (Automatically configured unless set explicitly) - --optimizer-cache-hit-ratio=# - Expected hit rate of the row and index cache in storage - engines. The value should be an integer between 0 and 99, - where 0 means cache is empty and 99 means that value is - almost always in the cache. + --optimizer-disk-read-cost=# + Cost of reading a block of IO_SIZE (4096) from a disk (in + usec). + --optimizer-disk-read-ratio=# + Chance that we have to do a disk read to find a row or + index entry from the engine cache + (cache_misses/total_cache_requests). 0.0 means that + everything is cached and 1.0 means that nothing is + expected to be in the engine cache. --optimizer-extra-pruning-depth=# If the optimizer needs to enumerate join prefix of this size or larger, then it will try agressively prune away @@ -737,6 +741,8 @@ The following specify which files/extra groups are read (specified before remain --optimizer-key-copy-cost=# Cost of finding the next key in the engine and copying it to the SQL layer. + --optimizer-key-lookup-cost=# + Cost for finding a key based on a key value --optimizer-key-next-find-cost=# Cost of finding the next key and rowid when using filters. @@ -753,6 +759,14 @@ The following specify which files/extra groups are read (specified before remain --optimizer-row-copy-cost=# Cost of copying a row from the engine or the join cache to the SQL layer. + --optimizer-row-lookup-cost=# + Cost of finding a row based on a rowid or a clustered + key. + --optimizer-row-next-find-cost=# + Cost of finding the next row when scanning the table. + --optimizer-scan-setup-cost=# + Extra cost added to TABLE and INDEX scans to get + optimizer to prefer index lookups. --optimizer-search-depth=# Maximum depth of search performed by the query optimizer. Values larger than the number of relations in a query @@ -807,6 +821,8 @@ The following specify which files/extra groups are read (specified before remain record samples --optimizer-where-cost=# Cost of checking the row against the WHERE clause. + Increasing this will have the optimizer to prefer plans + with less row combinations. --performance-schema Enable the performance schema. --performance-schema-accounts-size=# @@ -1719,22 +1735,27 @@ old-alter-table DEFAULT old-mode UTF8_IS_UTF8MB3 old-passwords FALSE old-style-user-limits FALSE -optimizer-cache-hit-ratio 50 +optimizer-disk-read-cost 0.01024 +optimizer-disk-read-ratio 0.02 optimizer-extra-pruning-depth 8 -optimizer-index-block-copy-cost 0.2 -optimizer-key-compare-cost 0.05 -optimizer-key-copy-cost 0.025 -optimizer-key-next-find-cost 0.0125 +optimizer-index-block-copy-cost 3.56e-05 +optimizer-key-compare-cost 1.1361e-05 +optimizer-key-copy-cost 1.5685e-05 +optimizer-key-lookup-cost 0.000435777 +optimizer-key-next-find-cost 8.2347e-05 optimizer-max-sel-arg-weight 32000 optimizer-prune-level 2 -optimizer-row-copy-cost 0.05 +optimizer-row-copy-cost 6.0866e-05 +optimizer-row-lookup-cost 0.000130839 +optimizer-row-next-find-cost 4.5916e-05 +optimizer-scan-setup-cost 0.01 optimizer-search-depth 62 optimizer-selectivity-sampling-limit 100 optimizer-switch index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on optimizer-trace optimizer-trace-max-mem-size 1048576 optimizer-use-condition-selectivity 4 -optimizer-where-cost 0.2 +optimizer-where-cost 3.2e-05 performance-schema FALSE performance-schema-accounts-size -1 performance-schema-consumer-events-stages-current FALSE |