| Server IP : 88.99.149.37 / Your IP : 216.73.216.141 Web Server : nginx/1.31.2 System : Linux server-88-99-149-37 6.12.0-124.56.5.el10_1.x86_64 #1 SMP PREEMPT_DYNAMIC Fri May 15 06:12:08 EDT 2026 x86_64 User : muralimurth ( 1015) PHP Version : 8.4.23 Disable Function : exec,system,passthru,shell_exec,proc_close,proc_open,dl,popen,show_source,posix_kill,posix_mkfifo,posix_getpwuid,posix_setpgid,posix_setsid,posix_setuid,posix_setgid,posix_seteuid,posix_setegid,posix_uname MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/local/mysql/mysql-test/suite/sys_vars/t/ |
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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; -- ECHO '# Test1#' SET @@GLOBAL.thread_cache_size=3; FLUSH THREADS; select variable_value<=@@global.thread_cache_size from information_schema.global_status where variable_name="Threads_cached"; ################################## # Make 4 connections # ################################## CONNECT (conn1,localhost,root,,); CONNECT (conn2,localhost,root,,); CONNECT (conn3,localhost,root,,); CONNECT (conn4,localhost,root,,); CONNECTION default; # Wait until all connections done let $wait_condition= SELECT COUNT(*)= 5 FROM INFORMATION_SCHEMA.PROCESSLIST; --source include/wait_condition.inc select variable_value<=@@global.thread_cache_size from information_schema.global_status where variable_name="Threads_cached"; #################################### #Disconnecting all the connections # #################################### 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 # Wait until thread cache becomes 3 let $wait_condition= SELECT variable_value = 3 FROM INFORMATION_SCHEMA.global_status where variable_name="Threads_cached"; --source include/wait_condition.inc # # Decreasing cache size to 1 # SET @@GLOBAL.thread_cache_size= 1; FLUSH THREADS; CONNECT (conn1,localhost,root,,); CONNECT (conn2,localhost,root,,); CONNECTION default; # Wait until all connects ready let $wait_condition= SELECT COUNT(*)= 3 FROM INFORMATION_SCHEMA.PROCESSLIST; --source include/wait_condition.inc DISCONNECT conn1; DISCONNECT conn2; # Wait until all disconnects ready let $wait_condition= SELECT COUNT(*)= 1 FROM INFORMATION_SCHEMA.PROCESSLIST; --source include/wait_condition.inc # Wait until thread cache becomes 1 let $wait_condition= SELECT variable_value = 1 FROM INFORMATION_SCHEMA.global_status where variable_name="Threads_cached"; --source include/wait_condition.inc # # Cleanup # SET @@GLOBAL.thread_cache_size = @global_thread_cache_size;