/usr/lib/mysql-testsuite/t/bug12427262.test is in percona-xtradb-cluster-testsuite-5.5 5.5.34-25.9+dfsg-0ubuntu4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | --echo #
--echo # Bug#12427262 : 60961: SHOW TABLES VERY SLOW WHEN NOT IN SYSTEM DISK CACHE.
--echo #
--source include/not_embedded.inc
--source include/have_perfschema.inc
--disable_warnings
create database show_table_lw_db;
use show_table_lw_db;
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
create table t4 (c1 int);
create table t5 (c1 int);
create table t6 (c1 int);
create table t7 (c1 int);
create table t8 (c1 int);
create table t9 (c1 int);
create table t10 (c1 int);
--enable_warnings
# Query PS to know initial read count for frm file.
select Sum(ALL(COUNT_READ)) from performance_schema.file_summary_by_instance where FILE_NAME
like "%show_table_lw_db%" AND FILE_NAME like "%.frm%" AND EVENT_NAME='wait/io/file/sql/FRM'
into @count_read_before;
show tables;
# Query PS to know read count for frm file after above query. It should
# not be changed as FRM file will not be opened for above query.
select Sum(ALL(COUNT_READ)) from performance_schema.file_summary_by_instance where FILE_NAME
like "%show_table_lw_db%" AND FILE_NAME like "%.frm%" AND EVENT_NAME='wait/io/file/sql/FRM'
into @count_read_after;
select @count_read_after-@count_read_before;
show full tables;
# Query PS to know read count for frm file after above query. COUNT_READ
# will be incremented by 1 as FRM file will be opened for above query.
select Sum(ALL(COUNT_READ)) from performance_schema.file_summary_by_instance where FILE_NAME
like "%show_table_lw_db%" AND FILE_NAME like "%.frm%" AND EVENT_NAME='wait/io/file/sql/FRM'
into @count_read_after;
select @count_read_after-@count_read_before;
--disable_warnings
drop table t1;
drop database show_table_lw_db;
--enable_warnings
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