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158 lines
5.6 KiB
Text
158 lines
5.6 KiB
Text
############# mysql-test\t\thread_cache_size_func.test #######################################
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# #
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# Variable Name: thread_cache_size #
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# Scope: SESSION #
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# Access Type: Dynamic #
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# Data Type: Enumeration #
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# Default Value: 0 #
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# Values: 0-16384 #
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# #
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# #
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# Creation Date: 2008-03-02 #
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# Author: Sharique Abdullah #
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# #
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# Description: Test Cases of Dynamic System Variable "thread_cache_size" #
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# that checks behavior of this variable in the following ways #
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# * Functionality based on different values #
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# #
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# Reference: http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html #
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# option_mysqld_thread_cache_size #
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# #
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#########################################################################################
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#
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# Setup
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#
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--source include/not_embedded.inc
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SET @global_thread_cache_size = @@GLOBAL.thread_cache_size;
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FLUSH STATUS;
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#
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# Greater than cache threads, setting cache size to 3
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#
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-- ECHO '# Test1#'
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SET @@GLOBAL.thread_cache_size=3;
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let $threadsCreated1 = query_get_value(SHOW STATUS LIKE 'Threads_created', Value, 1);
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--echo Saving threads cached, threads created values
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SHOW STATUS LIKE 'Threads_cached';
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--echo 0 Expected
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--ECHO '#Old value for thread_cache'#
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##################################
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# Make 4 connections #
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##################################
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--echo ** Connecting conn1 using username 'root' **
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connect (conn1,localhost,root,,);
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--echo ** Connecting conn2 using username 'root' **
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connect (conn2,localhost,root,,);
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--echo ** Connecting conn3 using username 'root' **
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connect (conn3,localhost,root,,);
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--echo ** Connecting conn4 using username 'root' **
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connect (conn4,localhost,root,,);
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let $threadsCreated2 = query_get_value(SHOW STATUS LIKE 'Threads_created', Value, 1);
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--echo Saving threads cached, threads created values
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--disable_query_log
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eval SELECT ($threadsCreated2 - $threadsCreated1) AS 'Threads Created Difference';
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--enable_query_log
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--echo 4 Expected
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SHOW STATUS LIKE 'Threads_cached';
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--echo 0 Expected
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####################################
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#Disconnecting all the connections #
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####################################
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--echo ** Connection default **
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connection default;
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--echo ** Disconnecting conn1,conn2,conn3,conn4 **
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disconnect conn1;
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disconnect conn2;
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disconnect conn3;
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disconnect conn4;
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#
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# Checking the status
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#
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--echo '#new values for thread cache after disconnecting'#
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let $threadsCreated3 = query_get_value(SHOW STATUS LIKE 'Threads_created', Value, 1);
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--echo Saving threads cached, threads created values
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--disable_query_log
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eval SELECT ($threadsCreated3 - $threadsCreated2) AS 'Threads Created Difference';
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--enable_query_log
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--echo 0 Expected
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SHOW STATUS LIKE 'Threads_cached';
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--echo 3 Expected
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#
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# Decreasing cache size to 1
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#
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SET @@GLOBAL.thread_cache_size=1;
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connection default;
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let $threadsCreated6 = query_get_value(SHOW STATUS LIKE 'Threads_created', Value, 1);
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--echo Saving threads cached, threads created values
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--disable_query_log
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eval SELECT $threadsCreated6 - $threadsCreated3 AS 'Threads Created Difference';
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--enable_query_log
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--echo 0 Expected
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SHOW STATUS LIKE 'Threads_cached';
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--echo 1 Expected
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--echo Bug: The number of threads cached should have decreased with cache size decrease.
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--echo ** Connecting conn1 using username 'root' **
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CONNECT (conn1,localhost,root,,);
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--echo ** Connecting conn2 using username 'root' **
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CONNECT (conn2,localhost,root,,);
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let $threadsCreated4 = query_get_value(SHOW STATUS LIKE 'Threads_created', Value, 1);
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--echo Saving threads cached, threads created values
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--disable_query_log
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eval SELECT $threadsCreated4 - $threadsCreated3 AS 'Threads Created Difference';
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--enable_query_log
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--echo 1 Expected
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--echo Bug: The number of threads created should have increased because the cache should have 1 thread only
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SHOW STATUS LIKE 'Threads_cached';
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--echo 0 Expected
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--echo Bug: The number of threads created should have decreased because atleast 1 new connection came in
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--echo ** Connection default **
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connection default;
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--echo ** Disconnecting conn1,conn2 **
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disconnect conn1;
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disconnect conn2;
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--ECHO '#new status values for thread cache'#
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let $threadsCreated5 = query_get_value(SHOW STATUS LIKE 'Threads_created', Value, 1);
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--echo Saving threads cached, threads created values
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--disable_query_log
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eval SELECT ($threadsCreated5 - $threadsCreated4) AS 'Threads Created Difference';
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--enable_query_log
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--echo 0 Expected
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SHOW STATUS LIKE 'Threads_cached';
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--echo 1 Expected
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--echo Saving threads cached, threads created values
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#
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# Cleanup
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#
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SET @@GLOBAL.thread_cache_size = @global_thread_cache_size;
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