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############# mysql-test\t\thread_cache_size_func.test ##########################
# #
# Variable Name: thread_cache_size #
# Scope: SESSION #
# Access Type: Dynamic #
# Data Type: Enumeration #
# Default Value: 0 #
# Values: 0-16384 #
# #
# #
# Creation Date: 2008-03-02 #
# Author: Sharique Abdullah #
# #
# Modified: HHunger 2008-08-27 Reduced test to needed function and inserted #
# wait-loops #
# #
# Description: Test Cases of Dynamic System Variable "thread_cache_size" #
# that checks behavior of this variable in the following ways #
# * Functionality based on different values #
# #
# Reference: #
# http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html #
# #
#################################################################################
#
# Setup
#
--source include/one_thread_per_connection.inc
SET @global_thread_cache_size = @@GLOBAL.thread_cache_size;
FLUSH STATUS;
-- ECHO '# Test1#'
SET @@GLOBAL.thread_cache_size=3;
SHOW STATUS LIKE 'Threads_cached';
--echo 0 Expected
##################################
# Make 4 connections #
##################################
--echo ** Connecting conn1 using username 'root' **
CONNECT (conn1,localhost,root,,);
--echo ** Connecting conn2 using username 'root' **
CONNECT (conn2,localhost,root,,);
--echo ** Connecting conn3 using username 'root' **
CONNECT (conn3,localhost,root,,);
--echo ** Connecting conn4 using username 'root' **
CONNECT (conn4,localhost,root,,);
--echo ** Connection default **
CONNECTION default;
# Wait until all connections done
let $wait_condition= SELECT COUNT(*)= 5 FROM INFORMATION_SCHEMA.PROCESSLIST;
--source include/wait_condition.inc
SHOW STATUS LIKE 'Threads_cached';
--echo 0 Expected
####################################
#Disconnecting all the connections #
####################################
--echo ** Disconnecting conn1,conn2,conn3,conn4 **
DISCONNECT conn1;
DISCONNECT conn2;
DISCONNECT conn3;
DISCONNECT conn4;
#
# Checking the status
#
# Wait until all disconnects ready
let $wait_condition= SELECT COUNT(*)= 1 FROM INFORMATION_SCHEMA.PROCESSLIST;
--source include/wait_condition.inc
SHOW STATUS LIKE 'Threads_cached';
--echo 3 Expected
#
# Decreasing cache size to 1
#
SET @@GLOBAL.thread_cache_size= 1;
--echo ** Connecting conn1 using username 'root' **
CONNECT (conn1,localhost,root,,);
--echo ** Connecting conn2 using username 'root' **
CONNECT (conn2,localhost,root,,);
--echo connection default;
CONNECTION default;
# Wait until all connects ready
let $wait_condition= SELECT COUNT(*)= 3 FROM INFORMATION_SCHEMA.PROCESSLIST;
--source include/wait_condition.inc
--echo ** Disconnecting conn1,conn2 **
DISCONNECT conn1;
DISCONNECT conn2;
# Wait until all disconnects ready
let $wait_condition= SELECT COUNT(*)= 1 FROM INFORMATION_SCHEMA.PROCESSLIST;
--source include/wait_condition.inc
SHOW STATUS LIKE 'Threads_cached';
--echo 1 Expected
#
# Cleanup
#
SET @@GLOBAL.thread_cache_size = @global_thread_cache_size;
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