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higher the better. Iv. innodb_additional_mem_pool_size (Default 8M) Innodb_additional_mem_pool_size sets the amount of memory space that the InnoDB storage engine uses to hold data dictionary information and some internal data structures, so when we have a very large number of database objects in MySQL instance, It is necessary to adjust the size of this parameter appropriately to ensure that all data can be stored in memory for increased access eff
MySQL performance tuning and Architecture Design-the idea and solution of the High Availability design in Chapter 17th, mysql Tuning Chapter 1 High Availability design ideas and solutions Preface: The database system is the core part of an application system. To ensure the o
MySql performance tuning policy and mysql tuning policy This topic provides detailed parameter descriptions for my. cnf configuration. The sample configuration is as follows: # Cat my. cnf # MySQL client library initializatio
MySQL performance tuning and Architecture Design-Chapter 1 Performance Design-MySQL Replication and replication Optimization Chapter 1 scalability design-MySQL Replication Preface: MySQL
MySQL performance tuning and Architecture Design-Chapter 1 Basic Principles of scalable design, mysql Tuning Chapter 1 Basic Principles of scalable design Preface: With the rapid increase of information, the development of hardware equipment has gradually become unable to ke
MySql Performance Tuning (5) demonstration of using a proper lock mechanism for table locks, mysql Tuning MySql locks take the following forms: 1. Table-level locks; low overhead, fast locking; no deadlock; large lock granularity,
MySql Performance Tuning (4) Quick table structure modification and mysql Tuning 1. Modify the varchar type To meet your needs, change varchar (6) To varchar (8). A better method is not to use altertable modify, but to use the following steps: A. Create A temporar
MySQL performance tuning and Architecture design--9th chapter The performance optimization of MySQL database schema designPreface: Many people think that performance is optimized in the process of writing code (program code or dat
Tags: mysql optimizerBased on a common version of MySQL serverPurpose: Speed up the responsiveness of the serverNumber of processes = Process * thread1, the query process of MySQL1) The client sends a connection request to the server2) server-side (connection pooling) threading to respond to user requests3) User initiated SQL statement query database select * FROM DB.A;4) Query cache: Record the user's SQL
Performance Tuning overview: I. Overview 2. what is performance tuning? (What) 3. Why performance optimization? (Why) 4. When do I need performance optimization? (When) 5. where do I need per
MYSQL Performance Tuning and architecture design-instance analysis of factors affecting MYSQL Performance Requirement overview A simple discussion zone system requires users, user groups, and group discussion areas. Brief analysis 1) tables that need to store user data; 2) t
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 bottlen
over at the same time is too small, the server handles the connection more slowly. The server-side call to the Accept function is actually a connection that takes three handshakes from the connected accept queue. The Accept queue and the SYN queue are listen functions that are created and maintained. /proc/sys/net/core/somaxconn changes Each of the above is actually enough to write an article to analyze, here I just outline the next part of the parameter, note that in the change of
.conf.all.accept_redirects=0Net.ipv4.conf.eth0.accept_redirects=0Net.ipv4.conf.default.accept_redirects=0Net.ipv4.conf.lo.secure_redirects=0Net.ipv4.conf.all.secure_redirects=0Net.ipv4.conf.eth0.secure_redirects=0Net.ipv4.conf.default.secure_redirects=0Net.ipv4.conf.lo.send_redirects=0Net.ipv4.conf.all.send_redirects=0Net.ipv4.conf.eth0.send_redirects=0Net.ipv4.conf.default.send_redirects=05) Optimizing the TCP protocol stackOpen the TCP SYN cookie option to help protect the server from Syncfloo
]: MySQL 08:32:38> change MASTER toMaster_host= ' 192.168.0.1 ',Master_user= ' Repl ',Master_password= ' PASSWORD ',Master_log_file= ' mysql-bin.000035 ',master_log_pos=399;After executing the change MASTER to command, you can start SLAVE with the following command:[email protected]: MySQL 08:33:49> START SLAVE;At this point, our Replication environment is built.
server-side call to the Accept function is actually the connection from the connected accept queue that completes the three-time handshake.The Accept queue and the SYN queue are listen functions to complete the creation of the maintenance./proc/sys/net/core/somaxconn modification Each of the above parameters is actually enough to write an article to analyze, here I just outline the next part of the parameter
When it comes to MySQL tuning, there are a lot of points that we can do, so combing, some tuning strategy, today just summarizes the tuning of server parametersActually speaking, the parameter tuning, my understanding is nothing more than two points: If it is InnoDB
are some bugs, is not necessarily applicable to the core of the online system.3. DRBD Disk Network mirroring schemeAdvantage: Software is powerful, data is mirrored across physical hosts at the underlying fast device level, and different levels of synchronization can be configured according to performance and reliability requirements. IO operations are kept in order to meet the database's demanding data consistency.Disadvantage: Non-Distributed File
Tags: MySQL performance tuning six InnoDB engine and MyISAM engine performanceThe choice of the two storage engines depends on the application characteristics of the project, and for the complex application system, it is possible to select a combination of various storage engines according to the actual situation. But this method is not recommended to be taken. M
Mysql performance optimization configuration parameters and mysql performance optimization parameters To modify the values of the following parameter configuration items, refer1. connection settingsShow variables like '% max_conne
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