pt-mext - Look at many samples of MySQL
SHOW GLOBAL STATUS side-by-side.
pt-mext [OPTIONS] -- COMMAND
pt-mext columnizes repeated output from a program like mysqladmin extended.
Get output from
pt-mext -r -- mysqladmin ext -i10 -c3
Get output from a file:
pt-mext -r -- cat mysqladmin-output.txt
Percona Toolkit is mature, proven in the real world, and well tested, but all database tools can pose a risk to the system and the database server. Before using this tool, please:
- Read the tool’s documentation
- Review the tool’s known “BUGS”
- Test the tool on a non-production server
- Backup your production server and verify the backups
pt-mext executes the
COMMAND you specify, and reads through the result one
line at a time. It places each line into a temporary file. When it finds a
blank line, it assumes that a new sample of SHOW GLOBAL STATUS is starting,
and it creates a new temporary file. At the end of this process, it has a
number of temporary files. It joins the temporary files together side-by-side
and prints the result. If
--relative option is given, it first subtracts
each sample from the one after it before printing results.
Show help and exit.
short form: -r
Subtract each column from the previous column.
Show version and exit.
This tool does not use any environment variables.
This tool requires the Bourne shell (/bin/sh) and the seq program.
For a list of known bugs, see http://www.percona.com/bugs/pt-mext.
Please report bugs at https://bugs.launchpad.net/percona-toolkit. Include the following information in your bug report:
- Complete command-line used to run the tool
- MySQL version of all servers involved
- Output from the tool including STDERR
- Input files (log/dump/config files, etc.)
If possible, include debugging output by running the tool with
Visit http://www.percona.com/software/percona-toolkit/ to download the latest release of Percona Toolkit. Or, get the latest release from the command line:
wget percona.com/get/percona-toolkit.tar.gz wget percona.com/get/percona-toolkit.rpm wget percona.com/get/percona-toolkit.deb
You can also get individual tools from the latest release:
TOOL with the name of any tool.
ABOUT PERCONA TOOLKIT¶
This tool is part of Percona Toolkit, a collection of advanced command-line tools for MySQL developed by Percona. Percona Toolkit was forked from two projects in June, 2011: Maatkit and Aspersa. Those projects were created by Baron Schwartz and primarily developed by him and Daniel Nichter. Visit http://www.percona.com/software/ to learn about other free, open-source software from Percona.
COPYRIGHT, LICENSE, AND WARRANTY¶
This program is copyright 2011-2016 Percona LLC and/or its affiliates, 2010 Baron Schwartz.
THIS PROGRAM IS PROVIDED “AS IS” AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2; OR the Perl Artistic License. On UNIX and similar systems, you can issue `man perlgpl’ or `man perlartistic’ to read these licenses.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.