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Introduced a new free blocks list. Free blocks are now re-used before new blocks are allocated from the pool. There is a new status variable which can be queried by "show status like key_blocks_unused". include/keycache.h: WL#1700 - Properly count key_blocks_used and key_blocks_current. free_block_list is the new free blocks list. It is implemented like a stack (LIFO). blocks_unused holds the number of never used blocks plus the number of blocks in the free list. Removed the variable global_blocks_used, as it was always the same as blocks_used. mysql-test/r/key_cache.result: WL#1700 - Properly count key_blocks_used and key_blocks_current. Inserted some commands which show how key_blocks_used and key_blocks_unused work. mysql-test/t/key_cache.test: WL#1700 - Properly count key_blocks_used and key_blocks_current. Inserted some commands which show how key_blocks_used and key_blocks_unused work. mysys/mf_keycache.c: WL#1700 - Properly count key_blocks_used and key_blocks_current. Introduced a new free blocks list. The introductory comment says it all (I hope). Removed the variable global_blocks_used, as it was always the same as blocks_used. sql/mysqld.cc: WL#1700 - Properly count key_blocks_used and key_blocks_current. The blocks_unused count can be queried by "show status like key_blocks_unused". Removed the variable global_blocks_used, as it was always the same as blocks_used. Introduced SHOW_KEY_CACHE_CONST_LONG for status variables that must not be modified (i.e. flushed to zero). sql/sql_show.cc: WL#1700 - Properly count key_blocks_used and key_blocks_current. Introduced SHOW_KEY_CACHE_CONST_LONG for status variables that must not be modified (i.e. flushed to zero). sql/sql_test.cc: WL#1700 - Properly count key_blocks_used and key_blocks_current. Removed the variable global_blocks_used, as it was always the same as blocks_used. sql/structs.h: WL#1700 - Properly count key_blocks_used and key_blocks_current. Introduced SHOW_KEY_CACHE_CONST_LONG for status variables that must not be modified (i.e. flushed to zero).
12 KiB
12 KiB