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225 lines
4.8 KiB
ReStructuredText
225 lines
4.8 KiB
ReStructuredText
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#######
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pt-mext
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#######
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.. highlight:: perl
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****
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NAME
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****
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pt-mext - Look at many samples of MySQL \ ``SHOW GLOBAL STATUS``\ side-by-side.
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********
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SYNOPSIS
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********
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Usage: pt-mext [OPTIONS] -- COMMAND
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pt-mext columnizes repeated output from a program like mysqladmin extended.
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Get output from \ ``mysqladmin``\ :
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.. code-block:: perl
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pt-mext -r -- mysqladmin ext -i10 -c3"
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Get output from a file:
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.. code-block:: perl
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pt-mext -r -- cat mysqladmin-output.txt
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*****
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RISKS
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*****
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The following section is included to inform users about the potential risks,
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whether known or unknown, of using this tool. The two main categories of risks
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are those created by the nature of the tool (e.g. read-only tools vs. read-write
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tools) and those created by bugs.
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pt-mext is a read-only tool. It should be very low-risk.
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At the time of this release, we know of no bugs that could cause serious harm
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to users.
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The authoritative source for updated information is always the online issue
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tracking system. Issues that affect this tool will be marked as such. You can
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see a list of such issues at the following URL:
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`http://www.percona.com/bugs/pt-mext <http://www.percona.com/bugs/pt-mext>`_.
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See also "BUGS" for more information on filing bugs and getting help.
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***********
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DESCRIPTION
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***********
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pt-mext executes the \ ``COMMAND``\ you specify, and reads through the result one
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line at a time. It places each line into a temporary file. When it finds a
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blank line, it assumes that a new sample of SHOW GLOBAL STATUS is starting,
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and it creates a new temporary file. At the end of this process, it has a
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number of temporary files. It joins the temporary files together side-by-side
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and prints the result. If the "-r" option is given, it first subtracts
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each sample from the one after it before printing results.
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*******
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OPTIONS
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*******
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-r
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Relative: subtract each column from the previous column.
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***********
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ENVIRONMENT
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***********
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This tool does not use any environment variables.
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*******************
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SYSTEM REQUIREMENTS
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*******************
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This tool requires the Bourne shell (\ */bin/sh*\ ) and the seq program.
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****
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BUGS
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****
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For a list of known bugs, see `http://www.percona.com/bugs/pt-mext <http://www.percona.com/bugs/pt-mext>`_.
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Please report bugs at `https://bugs.launchpad.net/percona-toolkit <https://bugs.launchpad.net/percona-toolkit>`_.
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Include the following information in your bug report:
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\* Complete command-line used to run the tool
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\* Tool "--version"
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\* MySQL version of all servers involved
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\* Output from the tool including STDERR
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\* Input files (log/dump/config files, etc.)
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If possible, include debugging output by running the tool with \ ``PTDEBUG``\ ;
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see "ENVIRONMENT".
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***********
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DOWNLOADING
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***********
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Visit `http://www.percona.com/software/percona-toolkit/ <http://www.percona.com/software/percona-toolkit/>`_ to download the
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latest release of Percona Toolkit. Or, get the latest release from the
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command line:
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.. code-block:: perl
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wget percona.com/get/percona-toolkit.tar.gz
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wget percona.com/get/percona-toolkit.rpm
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wget percona.com/get/percona-toolkit.deb
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You can also get individual tools from the latest release:
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.. code-block:: perl
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wget percona.com/get/TOOL
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Replace \ ``TOOL``\ with the name of any tool.
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*******
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AUTHORS
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*******
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Baron Schwartz
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*********************
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ABOUT PERCONA TOOLKIT
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*********************
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This tool is part of Percona Toolkit, a collection of advanced command-line
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tools developed by Percona for MySQL support and consulting. Percona Toolkit
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was forked from two projects in June, 2011: Maatkit and Aspersa. Those
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projects were created by Baron Schwartz and developed primarily by him and
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Daniel Nichter, both of whom are employed by Percona. Visit
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`http://www.percona.com/software/ <http://www.percona.com/software/>`_ for more software developed by Percona.
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********************************
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COPYRIGHT, LICENSE, AND WARRANTY
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********************************
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This program is copyright 2010 Baron Schwartz, 2011 Percona Inc.
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Feedback and improvements are welcome.
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THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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systems, you can issue \`man perlgpl' or \`man perlartistic' to read these
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licenses.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA.
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*******
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VERSION
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*******
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pt-mext 1.0.1
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