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################# mysql-test\t\innodb_max_dirty_pages_pct_basic.test ##########
# #
# Variable Name: innodb_max_dirty_pages_pct #
# Scope: GLOBAL #
# Access Type: Dynamic #
# Data Type: Numeric #
# Default Value: 75 #
# Range: 0-99 #
# #
# #
# Creation Date: 2008-02-07 #
# Author: Rizwan #
# #
#Description: Test Cases of Dynamic System Variable #
# innodb_max_dirty_pages_pct that checks the behavior of #
# this variable in the following ways #
# * Default Value #
# * Valid & Invalid values #
# * Scope & Access method #
# * Data Integrity #
# #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/ #
# server-system-variables.html #
# #
###############################################################################
--source include/have_innodb.inc
--source include/load_sysvars.inc
# set default value for test
SET @save_innodb_max_dirty_pages_pct=@@global.innodb_max_dirty_pages_pct;
set @@global.innodb_max_dirty_pages_pct=75;
######################################################################
# START OF innodb_max_dirty_pages_pct TESTS #
######################################################################
################################################################################
# Saving initial value of innodb_max_dirty_pages_pct in a temporary variable #
################################################################################
SET @global_start_value = @@global.innodb_max_dirty_pages_pct;
SELECT @global_start_value;
# need this because setting innodb_max_dirty_pages_pct to lower than this
# should cause a warning
SET @global_start_max_dirty_lwm_value = @@global.innodb_max_dirty_pages_pct_lwm;
SELECT @global_start_max_dirty_lwm_value;
SET @@global.innodb_max_dirty_pages_pct_lwm = 0;
SELECT @@global.innodb_max_dirty_pages_pct_lwm;
--echo '#--------------------FN_DYNVARS_046_01------------------------#'
########################################################################
# Display the DEFAULT value of innodb_max_dirty_pages_pct #
########################################################################
SET @@global.innodb_max_dirty_pages_pct = 0;
SET @@global.innodb_max_dirty_pages_pct = DEFAULT;
SELECT @@global.innodb_max_dirty_pages_pct;
--echo '#---------------------FN_DYNVARS_046_02-------------------------#'
################################################################################
# check if innodb_max_dirty_pages_pct can be accessed with and without @@ sign #
################################################################################
--Error ER_GLOBAL_VARIABLE
SET innodb_max_dirty_pages_pct = 1;
SELECT @@innodb_max_dirty_pages_pct;
--Error ER_UNKNOWN_TABLE
SELECT local.innodb_max_dirty_pages_pct;
SET global innodb_max_dirty_pages_pct = 0;
SELECT @@global.innodb_max_dirty_pages_pct;
--echo '#--------------------FN_DYNVARS_046_03------------------------#'
##########################################################################
# change the value of innodb_max_dirty_pages_pct to a valid value #
##########################################################################
SET @@global.innodb_max_dirty_pages_pct = 0.0;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 1;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 99;
SELECT @@global.innodb_max_dirty_pages_pct;
--echo '#--------------------FN_DYNVARS_046_04------------------------#'
##########################################################################
# change value of based on innodb_max_dirty_pages_pct_lwm #
##########################################################################
SET @@global.innodb_max_dirty_pages_pct_lwm = @global_start_value - 1;
SELECT @@global.innodb_max_dirty_pages_pct_lwm;
# this should cause warning
SET @@global.innodb_max_dirty_pages_pct = @global_start_value - 2;
SELECT @@global.innodb_max_dirty_pages_pct;
--echo '#--------------------FN_DYNVARS_046_05-------------------------#'
###########################################################################
# Change the value of innodb_max_dirty_pages_pct to invalid value #
###########################################################################
SET @@global.innodb_max_dirty_pages_pct = -1;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = -1024;
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = "T";
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = "Y";
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 100;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 1001;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 100000;
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = ' ';
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = " ";
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 1.1;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 0.1;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 31.34;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 100;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 99.999;
SELECT @@global.innodb_max_dirty_pages_pct;
--echo '#----------------------FN_DYNVARS_046_06------------------------#'
#########################################################################
# Check if the value in GLOBAL Table matches value in variable #
#########################################################################
--disable_warnings
SELECT @@global.innodb_max_dirty_pages_pct =
VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_max_dirty_pages_pct';
--enable_warnings
SELECT @@global.innodb_max_dirty_pages_pct;
--disable_warnings
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_max_dirty_pages_pct';
--enable_warnings
--echo '#---------------------FN_DYNVARS_046_07-------------------------#'
###################################################################
# Check if ON and OFF values can be used on variable #
###################################################################
--ERROR ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = OFF;
SELECT @@global.innodb_max_dirty_pages_pct;
--ERROR ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = ON;
SELECT @@global.innodb_max_dirty_pages_pct;
--echo '#---------------------FN_DYNVARS_046_08----------------------#'
###################################################################
# Check if TRUE and FALSE values can be used on variable #
###################################################################
SET @@global.innodb_max_dirty_pages_pct = TRUE;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = FALSE;
SELECT @@global.innodb_max_dirty_pages_pct;
##############################
# Restore initial value #
##############################
SET @@global.innodb_max_dirty_pages_pct = @global_start_value;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct_lwm = @global_start_max_dirty_lwm_value;
SELECT @@global.innodb_max_dirty_pages_pct_lwm;
SET @@global.innodb_max_dirty_pages_pct=@save_innodb_max_dirty_pages_pct;
###############################################################
# END OF innodb_max_dirty_pages_pct TESTS #
###############################################################
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