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MARIADB-DUMPSLOW(1) MariaDB Database System MARIADB-DUMPSLOW(1) NAME mariadb-dumpslow - Summarize slow query log files (mariadb-dumpslow is now a symlink to mariadb-dumpslow) SYNOPSIS mariadb-dumpslow [options] [log_file ...] DESCRIPTION The MariaDB slow query log contains information about queries that take a long time to execute. mariadb-dumpslow parses MariaDB slow query log files and prints a summary of their contents. Normally, mariadb-dumpslow groups queries that are similar except for the particular values of number and string data values. It "abstracts" these values to N and 'S' when displaying summary output. The -a and -n options can be used to modify value abstracting behavior. Invoke mariadb-dumpslow like this: shell> mariadb-dumpslow [options] [log_file ...] mariadb-dumpslow supports the following options. • --help Display a help message and exit. • -a Do not abstract all numbers to N and strings to 'S'. • --debug, -d Run in debug mode. • -g pattern Consider only queries that match the (grep-style) pattern. • -h host_name Host name of MariaDB server for *-slow.log file name. The value can contain a wildcard. The default is * (match all). • -i name Name of server instance (if using mariadb.server startup script). • -l Do not subtract lock time from total time. • -n N Abstract numbers with at least N digits within names. • -r Reverse the sort order. • -s sort_type How to sort the output. The value of sort_type should be chosen from the following list: • t, aa: Sort by rows affected or average rows affected • l, ae: Sort by rows examined or aggregate rows examined • l, at: Sort by query time or average query time • l, al: Sort by lock time or average lock time • s, as: Sort by rows sent or average rows sent • c: Sort by count • -t N Display only the first N queries in the output. • --verbose, -v Verbose mode. Print more information about what the program does. Example of usage: shell> mariadb-dumpslow Reading mariadb slow query log from /usr/local/mysql/data/mysqld51-apple-slow.log Count: 1 Time=4.32s (4s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost insert into t2 select * from t1 Count: 3 Time=2.53s (7s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost insert into t2 select * from t1 limit N Count: 3 Time=2.13s (6s) Lock=0.00s (0s) Rows=0.0 (0), root[root]@localhost insert into t1 select * from t1 COPYRIGHT Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc., 2010-2024 MariaDB Foundation This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA or see http://www.gnu.org/licenses/. SEE ALSO For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/ AUTHOR MariaDB Foundation (http://www.mariadb.org/). MariaDB 11.4 3 September 2024 MARIADB-DUMPSLOW(1)
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