1. Show processlist view the number of processes in MySQL
2. freem-M view memory
3. view system running status on top
4. View load in uptime
Use crontab-L to set the threshold, and then send an email alarm.
The Linux uptime command is
The Uptime command of the Linux performance testing tool displays how long the server has been running, how many login users there are, and the overall load average evaluation of server performance ). The load average value records the number of
Summary of some important MySQL performance indicator calculation and optimization methods, mysql performance indicator
1 QPS calculation (queries per second)
For databases dominated by MyISAM Engines
MySQL> show GLOBAL status like 'questions';+-----
MySQL Error: (2006, ' MySQL server has gone away ') the problem is that the client and MySQL server link between the broken.
The reason for this is that the SQL operation is typically too long, or that the data being transmitted is too large (for
MySQL performance indicator calculation and Optimization1 QPS computing (queries per second) for databases dominated by the MyISAM Engine
Mysql> show GLOBAL status like 'questions ';+ --------------- + ------------ +| Variable_name | Value |+ -------
MySQL installation and use 1. what is MySQLMySQL (pronounced MyEssQueEll) is an SQL database Server developed by Tcx (www. tcx. se) with multiple users and multiple execution threads. MySQL aims to be fast, stable, and easy to use. MySQL can be
0. Notes
Of course, MySQL is installed in a variety of ways, in Ubuntu, you can use the Apt-get way to install, the advantage is: fast and convenient. Basically, it will help you solve all the function library dependencies, normally, as long as apt-
1. what is MySQLMySQL (pronounced MyEssQueEll) is a multi-user SQL database Server developed by Tcx (www. tcx. se. MySQL aims to be fast, stable, and easy to use. MySQL can be obtained at www.mysql.net. II. install MySQL
1. what is
How to install and use MySQL
1. what is MySQL?
MySQL (pronounced "My Ess Que Ell") is a multi-user, multi-thread SQL database Server developed by Tcx (http://www.tcx.se. MySQL aims to be fast, stable, and easy to use.
MySQL can be obtained in
This is a Linux file system under development. MySQL databases on Linux can be processed as file systems. The development team hopes to get more suggestions. the following article translated from: in fact, this is not a file system in the general
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