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Add new user variables for tuning memory usage:

Browse Source 
query_alloc_block_size, query_prealloc_size, range_alloc_block_size,transaction_alloc_block_size and transaction_prealloc_size
Add more checks for "out of memory" detection in range optimization


configure.in:
  Added detection of mallinfo
mysql-test/r/variables.result:
  Test of new variables
mysql-test/t/variables.test:
  Test of new variables
sql/ha_berkeley.cc:
  Use init_sql_alloc instead of init_alloc_root for better OOM detection
sql/log_event.cc:
  Add new user variables for tuning memory usage
sql/mysql_priv.h:
  Add new user variables for tuning memory usage
sql/mysqld.cc:
  Add new user variables for tuning memory usage
sql/opt_ft.cc:
  Add new user variables for tuning memory usage
sql/opt_ft.h:
  Add new user variables for tuning memory usage
sql/opt_range.cc:
  Add new user variables for tuning memory usage
  Add more checks for out of memory conditions
sql/opt_range.h:
  Add new user variables for tuning memory usage
sql/set_var.cc:
  Add new user variables for tuning memory usage
sql/sql_acl.cc:
  Add new user variables for tuning memory usage
sql/sql_class.h:
  Add new user variables for tuning memory usage
sql/sql_delete.cc:
  Add new user variables for tuning memory usage
sql/sql_parse.cc:
  Add new user variables for tuning memory usage
sql/sql_select.cc:
  Add new user variables for tuning memory usage
sql/sql_test.cc:
  Add information about memory useage if system supports mallinfo()
sql/sql_udf.cc:
  Add new user variables for tuning memory usage
sql/sql_update.cc:
  Add new user variables for tuning memory usage
sql/table.cc:
  Add new user variables for tuning memory usage
This commit is contained in:
unknown
2003-10-11 22:00:24 +03:00
parent 0323a5c49f
commit 74ea459412
21 changed files with 257 additions and 81 deletions
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32
mysql-test/r/variables.result
View File

@ -171,6 +171,38 @@ set @@rand_seed1=10000000,@@rand_seed2=1000000;
select ROUND(RAND(),5);
ROUND(RAND(),5)
0.02887
show variables like '%alloc%';
Variable_name Value
query_alloc_block_size 8192
query_prealloc_size 8192
range_alloc_block_size 2048
transaction_alloc_block_size 8192
transaction_prealloc_size 4096
set @@range_alloc_block_size=1024*16;
set @@query_alloc_block_size=1024*17+2;
set @@query_prealloc_size=1024*18;
set @@transaction_alloc_block_size=1024*20-1;
set @@transaction_prealloc_size=1024*21-1;
select @@query_alloc_block_size;
@@query_alloc_block_size
17408
show variables like '%alloc%';
Variable_name Value
query_alloc_block_size 17408
query_prealloc_size 18432
range_alloc_block_size 16384
transaction_alloc_block_size 19456
transaction_prealloc_size 20480
set @@range_alloc_block_size=default;
set @@query_alloc_block_size=default, @@query_prealloc_size=default;
set transaction_alloc_block_size=default, @@transaction_prealloc_size=default;
show variables like '%alloc%';
Variable_name Value
query_alloc_block_size 8192
query_prealloc_size 8192
range_alloc_block_size 2048
transaction_alloc_block_size 8192
transaction_prealloc_size 4096
set big_tables=OFFF;
Variable 'big_tables' can't be set to the value of 'OFFF'
set big_tables="OFFF";