NAME¶
pt-sift - Browses files created by pt-collect.
SYNOPSIS¶
Usage: pt-sift FILE|PREFIX|DIRECTORY
pt-sift browses the files created by pt-collect. If you specify a FILE or
PREFIX, it browses only files with that prefix. If you specify a DIRECTORY,
then it browses all files within that directory.
RISKS¶
The following section is included to inform users about the potential risks,
whether known or unknown, of using this tool. The two main categories of risks
are those created by the nature of the tool (e.g. read-only tools vs.
read-write tools) and those created by bugs.
pt-sift is a read-only tool. It should be very low-risk.
At the time of this release, we know of no bugs that could cause serious harm to
users.
The authoritative source for updated information is always the online issue
tracking system. Issues that affect this tool will be marked as such. You can
see a list of such issues at the following URL:
http://www.percona.com/bugs/pt-sift
<
http://www.percona.com/bugs/pt-sift>.
See also "BUGS" for more information on filing bugs and getting help.
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-collect 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.
- 0
- 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¶
This tool does not have any command-line options.
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
<
http://www.percona.com/bugs/pt-sift>.
Please report bugs at
https://bugs.launchpad.net/percona-toolkit
<
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/
<
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 developed by Percona for MySQL support and consulting. Percona Toolkit
was forked from two projects in June, 2011: Maatkit and Aspersa. Those
projects were created by Baron Schwartz and developed primarily by him and
Daniel Nichter, both of whom are employed by Percona. Visit
<
http://www.percona.com/software/> for more software developed by
Percona.
COPYRIGHT, LICENSE, AND WARRANTY¶
This program is copyright 2010-2011 Baron Schwartz, 2011-2012 Percona Inc.
Feedback and improvements are welcome.
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 2.1.2