https://github.com/yoshinorim/MySlowTranCapture

A tool to print MySQL transactions that take more than <n> milliseconds
https://github.com/yoshinorim/MySlowTranCapture

Last synced: 17 days ago
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A tool to print MySQL transactions that take more than <n> milliseconds

• Host: GitHub
• URL: https://github.com/yoshinorim/MySlowTranCapture
• Owner: yoshinorim
• License: gpl-2.0
• Created: 2011-04-06T09:59:31.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2015-09-01T23:34:18.000Z (about 9 years ago)
• Last Synced: 2024-07-31T22:53:17.883Z (3 months ago)
• Language: C++
• Homepage:
• Size: 115 KB
• Stars: 116
• Watchers: 14
• Forks: 43
• Open Issues: 2
• Metadata Files:
  • Readme: README
  • License: COPYING

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README

        
MySlowTransactionCapture - A tool to print MySQL transactions that take 

more than  milliseconds

Reasons for developing this tool was described here: http://yoshinorimatsunobu.blogspot.com/2011/04/tracking-long-running-transactions-in.html

 

How to use:

* Install libpcap, libpcap-devel, boost, and boost-devel if not installed

* make

* make install

* Run myslowtrancapture

--

[root]# myslowtrancapture -i bond0

Tips:

* Use -i "interface name" to listen to specific NIC.

--- example ---

[root]# myslowtrancapture -i eth1

Monitoring eth1 interface..

Listening port 3306..

Logging transactions that take more than 4000 milliseconds..

---------------

* Use -f "filtering rules" to listen to specific IP addresses/ports.

Filtering syntax is the same as that of tcpdump.

--- example ---

[root]# myslowtrancapture -f "tcp port 5508"

Monitoring any interface..

Filtering rule: tcp port 5508

Logging transactions that take more than 4000 milliseconds..

---------------

* Use -t milliseconds to change printing criteria.

--- example ---

[root]# myslowtrancapture -i eth0 -t 10000

Monitoring eth0 interface..

Listening port 3306..

Logging transactions that take more than 10000 milliseconds..

---------------

* Use -o when your MySQL server speaks old MySQL protocols.

--- example ---

[root]# myslowtrancapture -i eth0 -t 10000 -o

Monitoring eth0 interface..

Listening port 3306..

Logging transactions that take more than 10000 milliseconds..

Capturing MySQL old protocols..

---------------

Limitations:

* Implicit commit by DDL is not supported (not handled as transaction ends).

* MySQL Server-Side Prepared Statement protocol is not supported.

License: GNU General Public License version 2

Author: DeNA Co.,Ltd. 

* MySQL protocol command constants were taken from MySQL source code

* local_address.c, local_address.h were taken from tcprstat(http://github.com/Lowercases/tcprstat/) authored by Ignacio Nin under GNU General Public License version 2.

* sll.h was taken from libpcap under BSD 4.3 license.