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 <
http://www.percona.com/bugs/pt-sift>.
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
- •
- 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".
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
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 2011-2014 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 along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA.
VERSION¶
pt-sift 2.2.11