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af4918b41f
Thus, all these variables will be grouped together and more logically named. Descriptions for the old variables were updated to indicate they are now aliases for the newly introduced variables with prefix log_slow. log_slow_queries_not_using_indexes_filter will not be addressed in this merge request. log_throttle_queries_not_using_indexes seems to no longer be in use. MTR tests are also updated to include the new variable names. All new code of the whole pull request, including one or several files that are either new files or modified ones, are contributed under the BSD-new license. I am contributing on behalf of my employer Amazon Web Services, Inc.
122 lines
4.1 KiB
Text
122 lines
4.1 KiB
Text
set @@log_slow_verbosity="";
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select @@log_slow_filter;
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@@log_slow_filter
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admin,filesort,filesort_on_disk,filesort_priority_queue,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
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select @@log_slow_rate_limit;
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@@log_slow_rate_limit
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1
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select @@log_slow_verbosity;
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@@log_slow_verbosity
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show variables like "log_slow%";
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Variable_name Value
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log_slow_admin_statements ON
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log_slow_disabled_statements sp
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log_slow_filter admin,filesort,filesort_on_disk,filesort_priority_queue,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
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log_slow_min_examined_row_limit 0
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log_slow_queries_not_using_indexes OFF
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log_slow_query_enable ON
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log_slow_query_file_name $PATH/mysqld-slow.log
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log_slow_query_time 10.000000
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log_slow_rate_limit 1
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log_slow_slave_statements ON
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log_slow_verbosity
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set @org_slow_query_log= @@global.slow_query_log;
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set @@log_slow_filter= "filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk,admin";
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select @@log_slow_filter;
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@@log_slow_filter
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admin,filesort,filesort_on_disk,full_join,full_scan,query_cache,query_cache_miss,tmp_table,tmp_table_on_disk
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set @@log_slow_filter="admin,admin";
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select @@log_slow_filter;
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@@log_slow_filter
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admin
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set @@log_slow_filter=7;
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select @@log_slow_filter;
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@@log_slow_filter
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admin,filesort,filesort_on_disk
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set @@log_slow_filter= "filesort,impossible,impossible2,admin";
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ERROR 42000: Variable 'log_slow_filter' can't be set to the value of 'impossible'
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set @@log_slow_filter= "filesort, admin";
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ERROR 42000: Variable 'log_slow_filter' can't be set to the value of ' admin'
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set @@log_slow_filter= 1<<31;
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ERROR 42000: Variable 'log_slow_filter' can't be set to the value of '2147483648'
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select @@log_slow_filter;
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@@log_slow_filter
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admin,filesort,filesort_on_disk
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set @@log_slow_verbosity= "query_plan,innodb";
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select @@log_slow_verbosity;
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@@log_slow_verbosity
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innodb,query_plan
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set @@log_slow_verbosity=1;
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select @@log_slow_verbosity;
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@@log_slow_verbosity
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innodb
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show fields from mysql.slow_log;
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Field Type Null Key Default Extra
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start_time timestamp(6) NO current_timestamp(6) on update current_timestamp(6)
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user_host mediumtext NO NULL
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query_time time(6) NO NULL
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lock_time time(6) NO NULL
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rows_sent int(11) NO NULL
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rows_examined int(11) NO NULL
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db varchar(512) NO NULL
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last_insert_id int(11) NO NULL
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insert_id int(11) NO NULL
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server_id int(10) unsigned NO NULL
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sql_text mediumtext NO NULL
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thread_id bigint(21) unsigned NO NULL
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rows_affected int(11) NO NULL
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flush slow logs;
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set long_query_time=0.1;
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set log_slow_filter='';
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set global slow_query_log=1;
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set global log_output='TABLE';
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select sleep(0.5);
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sleep(0.5)
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0
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select count(*) FROM mysql.slow_log;
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count(*)
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1
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set @@long_query_time=default;
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set global slow_query_log= @org_slow_query_log;
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set @@log_slow_filter=default;
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set @@log_slow_verbosity=default;
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set global log_output= default;
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truncate mysql.slow_log;
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#
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# MDEV-18333 Slow_queries count doesn't increase when slow_query_log is turned off
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#
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SET SESSION slow_query_log=OFF;
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SET GLOBAL slow_query_log=OFF;
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SET long_query_time=0.1;
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# Although this query is disallowed by slow_query_log, it should still increment Slow_queries
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SELECT VARIABLE_VALUE INTO @global_slow_queries
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FROM INFORMATION_SCHEMA.GLOBAL_STATUS
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WHERE VARIABLE_NAME='SLOW_QUERIES';
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SELECT sleep(0.2) INTO @tmp FROM DUAL;
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SELECT
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CAST(VARIABLE_VALUE AS UNSIGNED)-@global_slow_queries AS Slow_queries_increment
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FROM
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INFORMATION_SCHEMA.GLOBAL_STATUS
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WHERE
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VARIABLE_NAME='SLOW_QUERIES';
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Slow_queries_increment
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1
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# Although this query is disallowed by log_slow_filter, it should still increment Slow_queries
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SET log_slow_filter=filesort;
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SELECT sleep(0.2) INTO @tmp FROM DUAL;
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SELECT VARIABLE_VALUE INTO @global_slow_queries
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FROM INFORMATION_SCHEMA.GLOBAL_STATUS
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WHERE VARIABLE_NAME='SLOW_QUERIES';
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SELECT sleep(0.2) INTO @tmp FROM DUAL;
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SELECT
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CAST(VARIABLE_VALUE AS UNSIGNED)-@global_slow_queries AS Slow_queries_increment
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FROM
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INFORMATION_SCHEMA.GLOBAL_STATUS
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WHERE
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VARIABLE_NAME='SLOW_QUERIES';
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Slow_queries_increment
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1
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SET log_slow_filter=DEFAULT;
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SET @@long_query_time=default;
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SET GLOBAL slow_query_log= @org_slow_query_log;
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