File: log_buffer_size.result

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'#-----------------------------------------------------------#'
'Test what happens when the innodb_log_buffer_size is changed'
' in runtime (both decreased and increased).'
INSERT INTO t VALUES (1000, 'a');
SET GLOBAL innodb_log_buffer_size = 1024*1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
1048576
INSERT INTO t VALUES (2000, 'b');
SET GLOBAL innodb_log_buffer_size = 256*1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
262144
INSERT INTO t VALUES (3000, 'c');
SET GLOBAL innodb_log_buffer_size = 2048*1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
2097152
INSERT INTO t VALUES (4000, 'd');
SET @conn_counter = 9;
CALL insert_rows();
SET @conn_counter = 8;
CALL insert_rows();
SET @conn_counter = 7;
CALL insert_rows();
SET @conn_counter = 6;
CALL insert_rows();
SET @conn_counter = 5;
CALL insert_rows();
SET @conn_counter = 4;
CALL insert_rows();
SET @conn_counter = 3;
CALL insert_rows();
SET @conn_counter = 2;
CALL insert_rows();
SET @conn_counter = 1;
CALL insert_rows();
SET GLOBAL innodb_log_buffer_size = 256*1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
262144
SET GLOBAL innodb_log_buffer_size = 256*1024 + 1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
263168
SET GLOBAL innodb_log_buffer_size = 4096*1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
4194304
SET GLOBAL innodb_log_buffer_size = 256*1024 + 1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
263168
SET GLOBAL innodb_log_buffer_size = 256*1024;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
262144
SET @@GLOBAL.innodb_log_buffer_size=16777216;
SELECT @@innodb_log_buffer_size;
@@innodb_log_buffer_size
16777216