key_cache.test
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:5k
- #
- # Test of multiple key caches
- #
- --disable_warnings
- drop table if exists t1, t2, t3;
- --enable_warnings
- SET @save_key_buffer=@@key_buffer_size;
- SELECT @@key_buffer_size, @@small.key_buffer_size;
- # Change default key cache size
- SET @@global.key_buffer_size=16*1024*1024;
- SET @@global.default.key_buffer_size=16*1024*1024;
- SET @@global.default.key_buffer_size=16*1024*1024;
- SET @@global.small.key_buffer_size=1*1024*1024;
- SET @@global.medium.key_buffer_size=4*1024*1024;
- # Drop buffer
- SET @@global.medium.key_buffer_size=0;
- # Test double drop
- SET @@global.medium.key_buffer_size=0;
- # Print key buffer with different syntaxes
- SHOW VARIABLES like "key_buffer_size";
- SELECT @@key_buffer_size;
- SELECT @@global.key_buffer_size;
- SELECT @@global.default.key_buffer_size;
- SELECT @@global.default.`key_buffer_size`;
- SELECT @@global.`default`.`key_buffer_size`;
- SELECT @@`default`.key_buffer_size;
- SELECT @@small.key_buffer_size;
- SELECT @@medium.key_buffer_size;
- SET @@global.key_buffer_size=@save_key_buffer;
- #
- # Errors
- #
- --error 1064
- SELECT @@default.key_buffer_size;
- --error 1272
- SELECT @@skr.storage_engine="test";
- select @@keycache1.key_cache_block_size;
- select @@keycache1.key_buffer_size;
- set global keycache1.key_cache_block_size=2048;
- select @@keycache1.key_buffer_size;
- select @@keycache1.key_cache_block_size;
- set global keycache1.key_buffer_size=1*1024*1024;
- select @@keycache1.key_buffer_size;
- select @@keycache1.key_cache_block_size;
- set global keycache2.key_buffer_size=4*1024*1024;
- select @@keycache2.key_buffer_size;
- select @@keycache2.key_cache_block_size;
- set global keycache1.key_buffer_size=0;
- select @@keycache1.key_buffer_size;
- select @@keycache1.key_cache_block_size;
- select @@key_buffer_size;
- select @@key_cache_block_size;
- set global keycache1.key_buffer_size=1024*1024;
- create table t1 (p int primary key, a char(10)) delay_key_write=1;
- create table t2 (p int primary key, i int, a char(10), key k1(i), key k2(a));
- show status like 'key_blocks_used';
- # Following results differs on 64 and 32 bit systems because of different
- # pointer sizes, which takes up different amount of space in key cache
- --replace_result 1812 KEY_BLOCKS_UNUSED 1793 KEY_BLOCKS_UNUSED 1674 KEY_BLOCKS_UNUSED 1818 KEY_BLOCKS_UNUSED 1824 KEY_BLOCKS_UNUSED
- show status like 'key_blocks_unused';
- insert into t1 values (1, 'qqqq'), (11, 'yyyy');
- insert into t2 values (1, 1, 'qqqq'), (2, 1, 'pppp'),
- (3, 1, 'yyyy'), (4, 3, 'zzzz');
- select * from t1;
- select * from t2;
- update t1 set p=2 where p=1;
- update t2 set i=2 where i=1;
- show status like 'key_blocks_used';
- --replace_result 1808 KEY_BLOCKS_UNUSED 1789 KEY_BLOCKS_UNUSED 1670 KEY_BLOCKS_UNUSED 1814 KEY_BLOCKS_UNUSED 1820 KEY_BLOCKS_UNUSED
- show status like 'key_blocks_unused';
- cache index t1 key (`primary`) in keycache1;
- explain select p from t1;
- select p from t1;
- explain select i from t2;
- select i from t2;
- explain select count(*) from t1, t2 where t1.p = t2.i;
- select count(*) from t1, t2 where t1.p = t2.i;
- cache index t2 in keycache1;
- update t2 set p=p+1000, i=2 where a='qqqq';
- cache index t2 in keycache2;
- insert into t2 values (2000, 3, 'yyyy');
- cache index t2 in keycache1;
- update t2 set p=3000 where a='zzzz';
- select * from t2;
- explain select p from t2;
- select p from t2;
- explain select i from t2;
- select i from t2;
- explain select a from t2;
- select a from t2;
- # Test some error conditions
- --error 1284
- cache index t1 in unknown_key_cache;
- cache index t1 key (unknown_key) in keycache1;
- select @@keycache2.key_buffer_size;
- select @@keycache2.key_cache_block_size;
- set global keycache2.key_buffer_size=0;
- select @@keycache2.key_buffer_size;
- select @@keycache2.key_cache_block_size;
- set global keycache2.key_buffer_size=1024*1024;
- select @@keycache2.key_buffer_size;
- update t2 set p=4000 where a='zzzz';
- update t1 set p=p+1;
- set global keycache1.key_buffer_size=0;
- select * from t2;
- select p from t2;
- explain select i from t2;
- select i from t2;
- explain select a from t2;
- select a from t2;
- select * from t1;
- select p from t1;
- # Use the 'small' key cache
- create table t3 (like t1);
- cache index t3 in small;
- insert into t3 select * from t1;
- cache index t3 in keycache2;
- cache index t1,t2 in default;
- drop table t1,t2,t3;
- show status like 'key_blocks_used';
- --replace_result 1812 KEY_BLOCKS_UNUSED 1793 KEY_BLOCKS_UNUSED 1674 KEY_BLOCKS_UNUSED 1818 KEY_BLOCKS_UNUSED 1824 KEY_BLOCKS_UNUSED
- show status like 'key_blocks_unused';
- # Cleanup
- # We don't reset keycache2 as we want to ensure that mysqld will reset it
- set global keycache2.key_buffer_size=0;
- # Test to set up a too small size for a key cache (bug #2064)
- set global keycache3.key_buffer_size=100;
- set global keycache3.key_buffer_size=0;
- # Test case for buf 6447
- create table t1 (mytext text, FULLTEXT (mytext));
- insert t1 values ('aaabbb');
- check table t1;
- set GLOBAL key_cache_block_size=2048;
- check table t1;
- drop table t1;
- # End of 4.1 tests