NAME¶

pt-eustack-resolver - Get stack traces for a selected program with "eu-stack" and resolve symbols.

SYNOPSIS¶

Usage: pt-eustack-resolver <pid>

pt-eustack-resolver collects stack traces for the process with specified "pid".

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-eustack-resolver is the tool that gets stack traces for a selected program with "eu-stack" and resolves symbols. This is companion tool for pt-pmp, called when option "--dumper=pteu" is specified.

"eu-stack" is a tool from elfutils <https://sourceware.org/elfutils> package that prints a stack for each thread in a process or core file. "eu-stack" is faster than gdb and have smaller overhead on the diagnosed process.

OUTPUT¶

Stack for each thread, formatted similarly to "gdb thread apply all bt" output.

ATTENTION¶

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

SYSTEM REQUIREMENTS¶

You need "eu-stack" from the elfutils <https://sourceware.org/elfutils> package.

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".

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¶

Alexey Stroganov

ACKNOWLEDGMENTS¶

Part of code for symbol resolving derived from resolve-stack-traces.pl script (https://github.com/knielsen/knielsen-pmp)

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 2017-2024 Percona LLC and/or its affiliates.

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-eustack-resolver 3.7.1