pt-sift(1p)

NAME

pt-sift - Browses files created by pt-stalk.

SYNOPSIS

Usage: pt-sift FILE|PREFIX|DIRECTORY

pt-sift browses files created by pt-stalk. If no options are given, the tool browses all pt-stalk files in "/var/lib/pt-stalk" if that directory exists, else the current working directory is used. If a FILE is given, the tool browses files with the same prefix in the given file's directory. If a PREFIX is given, the tool browses files in "/var/lib/pt-stalk" (or the current working directory) with the same prefix. If a DIRECTORY is given, the tool browses all pt-stalk files in it.

RISKS

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

DESCRIPTION

pt-sift downloads other tools that it might need, such as pt-diskstats, and then makes a list of the unique timestamp prefixes of all the files in the directory, as written by the pt-stalk tool. If the user specified a timestamp on the command line, then it begins with that sample of data; otherwise it begins by showing a list of the timestamps and prompting for a selection. Thereafter, it displays a summary of the selected sample, and the user can navigate and inspect with keystrokes. The keystroke commands you can use are as follows:

•

d

Sets the action to start the pt-diskstats tool on the sample's disk performance statistics.

•

i

Sets the action to view the first INNODB STATUS sample in less.

•

m

Displays the first 4 samples of SHOW STATUS counters side by side with the pt-mext tool.

•

n

Summarizes the first sample of netstat data in two ways: by originating host, and by connection state.

•

j

Select the next timestamp as the active sample.

•

k

Select the previous timestamp as the active sample.

•

q

Quit the program.

•

1

Sets the action for each sample to the default, which is to view a summary of the sample.

•

Sets the action to just list the files in the sample.

•

*

Sets the action to view all of the sample's files in the less program.

OPTIONS

--help

Show help and exit.

--version

Show version and exit.

ENVIRONMENT

This tool does not use any environment variables.

SYSTEM REQUIREMENTS

This tool requires Bash v3 and the following programs: pt-diskstats, pt-pmp, pt-mext, and pt-align. If these programs are not in your PATH, they will be fetched from the Internet if curl is available.

BUGS

For a list of known bugs, see <https://jira.percona.com/projects/PT/issues>.

Please report bugs at <https://jira.percona.com/projects/PT>. Include the following information in your bug report:

•

Complete command-line used to run the tool

•

Tool "--version"

•

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 "PTDEBUG"; see "ENVIRONMENT".

ATTENTION

Using <PTDEBUG> might expose passwords. When debug is enabled, all command line parameters are shown in the output.

DOWNLOADING

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:

   wget percona.com/get/TOOL

Replace "TOOL" with the name of any tool.

AUTHORS

Baron Schwartz

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 2011-2026 Percona LLC and/or its affiliates, 2010-2011 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, version 2 along with this program; if not, see <https://www.gnu.org/licenses/>.

VERSION

pt-sift 3.7.1-4