mysql tuning script

Label:MySQL performance checking and tuning methodPublished: October 4, 2009 published by: OurmysqlSource: Sudone.com was read: 3,524 times only 1 ReviewsI have been using MySQL this database software, it works relatively stable, high efficiency. In the face of severe performance problems, there are generally several possibilities: 1, the index is not built well;2, SQL writing is too complex;3,

Tags: different issues lob STR Peak Multi-table BSP must not1.MySQL Performance Tuning IdeasWhat if a server has a long time load too high/ periodic load is too large , or occasionally stuck how to handle ? is it a cyclical change or an occasional problem ? is a problem with overall server performance , or the question of a single statement? ? specific to a single statement, this statement is waiting on th

Label:MySQL performance tuning and architecture design--1th chapter MySQL Basic introductionPreface:As one of the most popular open source database software, MySQL database software has been widely known. But in order to take care of the readers who are not familiar with MySQL, this chapter will make a brief introducti

15 useful MySQL/MariaDB performance tuning and Optimization Techniques MySQL is a powerful open-source Relational Database Management System (RDBMS ). It was released in 1995 (20 years ago ). It uses Structured Query Language (SQL), which may be the most popular choice in database content management. The latest MySQL v

very important point: when unsure which type of join to use, let the MySQL optimizer automatically judge, we only need to write select * from t1,t2 where T1.field = T2.fieldThe 10.7 using where WHERE clause is used to restrict which row matches the next table or send to the customer. Unless you specifically request or check all rows from a table, the query may have some errors if the extra value is not a using where and the table join type is all or

; set [global] Variable name = value;Permanently definedVim/etc/my.cnf[Mysqld]Variable name = value....: Wq#systemctl Restart MysqldMySQL architecture?Connection poolSQL interfaceAnalyzerOptimizerQuery cacheStorage EngineFile systemManagement toolsHow does the MySQL service process query requests?4 The SQL query command of the query database written by the program is unreasonable, resulting in slow database processingEnable slow query log on the datab

-XX: maxpermsize=256m-xx:+disableexplicitgc-xx:maxtenuringthreshold=31-xx:+useconcmarksweepgc-xx:+useparnewgc-xx:+ cmsparallelremarkenabled-xx:+usecmscompactatfullcollection-xx:largepagesizeinbytes=128m-xx:+ Usefastaccessormethods-xx:+usecmsinitiatingoccupancyonly-djava.awt.headless=trueTo apply the C3P0 connection pool configuration:Query configured MySQL maximum number of connections 1000, configure C3P0 Connection pool 800 Configure Tomcat link 800

, Running-------------------+-----------------+-------+------------- +--------------------Maxscale> list SerUnknown or missing option for the list command. Valid Sub-commands is:Clients List all clientsDcbs List All DcbsFilters List All FiltersListeners List all listenersModules List all currently loaded modulesMonitors List all monitorsServices List all the servicesServers List all serversSessions List all sessionsThreads List Polling ThreadsCommands List Registered commandsMaxscale> quit 4 tes

some keys, the values can be retrieved from the index tree for faster.Assume that you issue the following SELECT statement:Mysql> SELECT * from Tbl_name WHERE col1=val1 and Col2=val2; If a multi-column index exists on col1 and col2, the appropriate row can be fetched directly. If separate single-row column indexes exist on col1 and col2, the optimizer tries to find a more restrictive index by deciding which index will find fewer rows and using that index to fetch rows.When setting the Tmp_table

Tags: comparing field name performance created description RMS emp_table style 5.7Background: The author's source data a table about 7000多万条, data size 36G, index 6G, add up table space has 40g+, similar table has 4, a total of more than 200 million Database MySQL, engine for InnoDB, version 5.7, server memory 256G, physical memory several T, hardware parameters of the leverage, but processing these data trampled a lot of pits, because For not doing t

Tags: mysql, mariadbEvery day seems very busy, in fact, found themselves still very lazy, read a lot of books, not a good read. Recently, not so much work, decided to finish reading a few books, and continue to keep on updating. I hope I can persist in the end! The later content is all about MySQL management (performance tuning, high availability and monitoring),

Label:Recently new to the project, as a help, meet the performance test. Test requirements are not high, is now a single MySQL database, no table, 40 million data, 400 milliseconds, on the pressure is more than 1100 TPS, but, the dynamic only accounted for about 20%, that is, about 200 of the TPS bar. The server is still very good, I see more than 10 CPU threads, estimated more than 100 g memory bar. The general situation is as above. I did not optimi

MySQL from getting started to mastering (performance testing and tuning)Course View Address: HTTP://WWW.XUETUWUYOU.COM/COURSE/33Courses from the School of worry-free network : http://www.xuetuwuyou.com/Starting from the basics, all the way up to the advanced level, including but not limited to SQL statements, SQL Tuning, Database

About MySQL TuningThere are 3 ways to speed up the running of the MySQL server, from low to high efficiency:Replace the problematic hardware.Tuning the MySQL process settings.Optimize the query. Replacing the problematic hardware is usually our first consideration, mainly because the database consumes a lot of resources. But this is only the solution. In fact, y

The following articles mainly describe the MySQL database memory tuning. We all know that there are sometimes some bad things in the actual operations in the MySQL database. In order to improve its practical application, today, we specifically talk about the actual operations of MySQL database memory optimization. Key_

toolbox such as Percona-toolkit,3, MariaDBMARIADB, developed by the founder of MySQL, MARIADB is designed to be fully compatible with MySQL, including APIs and command lines, making it easy to be a replacement for MySQL.MARIADB provides the standard storage engine provided by MySQL, the MyISAM and innodb,10.0.9 versions, using XTRADB (named aria) instead of

Label:This paper mainly explains MySQL performance bottleneck analysis, performance indicators, performance index information collection tools and methods, analysis of the use of tuning tools.The article has not been completed, the following is an outline.Performance bottlenecks:SlowPerformance Index:Frequency of VisitsNumber of concurrent connectionsCache Hit RatioIndex useSlow log opening and analysisQuer

The following articles mainly introduce the actual operation steps for MySQL optimization. We first start from improving the actual running speed of the MySQL (best partner with PHP) server, there are three ways to improve the running speed of MySQL (the best combination of PHP and MySQL) servers. The efficiency is as

Label:[Client]Port = 3306Socket =/tmp/mysql.sock [Mysqld]Port = 3306Socket =/tmp/mysql.sock Basedir =/usr/local/mysqlDataDir =/data/mysqlPid-file =/data/mysql/mysql.piduser = MySQLBind-address = 0.0.0.0Server-id = 1 #表示是本机的序号为1, which is generally the meaning of master Skip-name-resolve# Disable MySQL for DNS resolution of external connections and use this option to eliminate the time for DNS resolution for

[Client]Port = 3306Socket =/tmp/mysql.sock[Mysqld]Port = 3306Socket =/tmp/mysql.sockBasedir =/usr/local/mysqlDataDir =/data/mysqlPid-file =/data/mysql/mysql.piduser = MySQLBind-address = 0.0.0.0Server-id = 1 #表示是本机的序号为1, which is generally the meaning of masterSkip-name-resolve# Disable MySQL for DNS resolution of external connections and use this option to eliminate the time for DNS resolution for