| 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/r/ |
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DROP TABLE IF EXISTS t1; ## Creating new table t1 ## CREATE TABLE t1 ( id INT NOT NULL AUTO_INCREMENT, PRIMARY KEY (id), rollno INT NOT NULL, name VARCHAR(30) ); SET @start_value= @@global.key_buffer_size; FLUSH STATUS; '#--------------------FN_DYNVARS_055_01-------------------------#' ## Setting initial value of variable to 131072 ## SET @@global.key_buffer_size = 131072; CONNECT test_con1,localhost,root,,; CONNECT test_con2,localhost,root,,; '#--------------------FN_DYNVARS_055_02-------------------------#' connection test_con1; SELECT @@global.key_buffer_size; @@global.key_buffer_size 131072 ## Inserting some rows in table ## INSERT INTO t1(rollno, name) VALUES(1, 'Record_1'); INSERT INTO t1(rollno, name) VALUES(2, 'Record_2'); INSERT INTO t1(rollno, name) VALUES(1, 'Record_3'); INSERT INTO t1(rollno, name) VALUES(3, 'Record_4'); INSERT INTO t1(rollno, name) VALUES(1, 'Record_5'); INSERT INTO t1(rollno, name) VALUES(3, 'Record_6'); INSERT INTO t1(rollno, name) VALUES(4, 'Record_7'); INSERT INTO t1(rollno, name) VALUES(4, 'Record_8'); INSERT INTO t1(rollno, name) VALUES(4, 'Record_9'); INSERT INTO t1(rollno, name) VALUES(4, 'Record_10'); ## Key_reads must be zero (no disk access) ## show status like 'Key_reads'; Variable_name Value Key_reads 0 connection test_con2; ## Key_reads must be zero (no disk access) ## show status like 'Key_reads'; Variable_name Value Key_reads 0 connection test_con1; ## Inserting some rows in table ## INSERT INTO t1(rollno, name) VALUES(5, 'Record_11'); INSERT INTO t1(rollno, name) VALUES(6, 'Record_12'); INSERT INTO t1(rollno, name) VALUES(5, 'Record_13'); INSERT INTO t1(rollno, name) VALUES(7, 'Record_14'); INSERT INTO t1(rollno, name) VALUES(5, 'Record_15'); INSERT INTO t1(rollno, name) VALUES(7, 'Record_16'); INSERT INTO t1(rollno, name) VALUES(8, 'Record_17'); INSERT INTO t1(rollno, name) VALUES(8, 'Record_18'); INSERT INTO t1(rollno, name) VALUES(8, 'Record_19'); INSERT INTO t1(rollno, name) VALUES(8, 'Record_20'); ## Key_reads must be zero (no disk access) ## show status like 'Key_reads'; Variable_name Value Key_reads 0 ## Dropping table ## DROP TABLE IF EXISTS t1; disconnect test_con2; disconnect test_con1; connection default; SET @@global.key_buffer_size= @start_value;