mirror/mariadb - May the force be without you: git.fucktheforce.de

mirror/mariadb

mirror of https://github.com/MariaDB/server.git synced 2025-01-19 13:32:33 +01:00

2 lines

21 B

Text

Raw Normal View History

Bug#38551 query cache can still consume [very little] cpu time even when it is off. When the query cache is disabled, the server shouldn't attempt to take the query cache mutex. By using the command line option --query_cache_type=0, the user can disable (backport from mysql-pe) mysql-test/t/query_cache_disabled-master.opt: * added test case for bug38551 mysql-test/t/query_cache_disabled.test: * added test case for bug38551 sql/set_var.cc: * Added before-trigger to verify that query_cache_type wasn't turned off or on during runtime. sql/set_var.h: * Changed order on how the enumeration is processed. By first projecting the character representation of the variable to a temporary integer we can have one function instead of two to check if the value is valid. sql/share/errmsg-utf8.txt: * Added error message for query cache disabled state sql/sql_cache.cc: * If the query cache is disabled at start up, shorten the execution path and avoid grabbing the query cache mutex each time the invalidate interface methods are called. sql/sql_cache.h: * Added new methods to set the query cache into a disabled state.

2009-10-29 12:19:36 +01:00

--query_cache_type=0