mysql tuning script

Tags: blog http os ar using SP file Data artOne, no longer for the Apache process siltation, depletion of memory and troubled0./etc/my.cnf, add the following line to the mysqld paragraph:Log-slow-queries=queries-slow.log Restart MySQL As appropriate, for a period of time, execute the mysqldumpslow command, or view Datadir/queries-slow.log directly, to find out the SQL statement that executes the timeout. Where DataDir is the storage path

Original link: MySQL Memory Allocation-by Rick JamesOriginal date: Created 2010; Refreshed Oct,, Jan, 2014Translators: AnchorTranslation Date: May 28, 2014MySQL memory allocation-high-speed setup schemeAssuming that only the MyISAM storage engine is used, setkey_buffer_size20% of available memory (plus set innodb_buffer_pool_size = 0)Assuming that only the InnoDB storage engine is used, setinnodb_buffer_pool_sizeIs 70% of the available memory (set key

MySQL is a powerful open-source database. With more and more database-driven applications, people have been pushing MySQL to its limits. Here are 101 tips for adjusting and optimizing MySQL installation. Some of the techniques are specific to the installation environment, but these ideas are generic. I've divided them into several categories to help you master mo

: /tcpstat--port 4001-t 1-n 0 (tcpstat, view response time for each TCP connection, Percona Company)parameter Tuning Why do I need to adjust parameters Configuration between different servers, performance is not the same Different business scenarios do not have the same requirements for data MySQL default parameter is only a reference value, not suitable for all the application scena

MySQL Character set tuning summary--http://xjsunjie.blog.51cto.com/999372/1355013The character set is a set of symbols and encoding rules, whether in the Oracle database or in the MySQL database, there is a character set selection problem. For the database, the character set is more important, because the database stores most of the data is a variety of text, cha

order to better match the permission record in the Mysql.user (some are defined by hostname).If the MySQL server has a DNS server set up and the client IP does not have a corresponding hostname on the DNS, then this process is slow and causes the connection to wait.After adding skip-name-resolve, I skipped a process.If the table scan rate exceeds 4000, indicating that too many table scans have been performed, it is likely that the index has not been

Tuning mysql Network Performance Debugging Tool article bitsCN.com this article is an article about Linux system network performance management skills, this section describes how to use route, netstat, and tcpdump network management testing tools and their functions. Route When configuring the network, you must specify the path through which the packet is received for the machine. In Linux, a command route

Debugging Tool for tuning mysql Network Performance: This article describes the network performance management skills of Linux systems, this section describes how to use route, netstat, and tcpdump network management testing tools and their functions. Route When configuring the network, you must specify the path through which the packet is received for the machine. In Linux, a command route is provided, wh

are not frequently join. Otherwise less efficient. 3 Tuning for SQL ---Avoid full fuzzy query%like%, it will invalidate the index. ---Avoid using SQL functions directly in SQL, SQL functions invalidate cached queries and replace them with variables. ---Large-volume operations are more efficient with limit batching (avoid locking the full table), and with limit 1, it is more efficient to know that only 1 queries are taken out of the data. ---is NOT nu

Tuning-primer.sh detects the current operation of MySQL, generates reports, and gives recommendations for optimization. Download and use:1.wget http://www.day32.com/MySQL/tuning-primer.sh2. Copy the tuning-primer.sh to the my.cnf Sibling directory3.chmod +x

not offline, because of the risk, so the system is more and more complex, not only maintenance difficulties, system performance is getting worse) system architecture and implementation of the performance impact: A Web application is naturally inseparable from the application (Web Applic ation) and Web application Server (Web server), Web server We control the tuning of the few are very mature products, Web application we can optimize many aspe

The following environments are representative of the general configuration and work environment of small and medium-sized enterprises. I hope this article will help you understand the MySQL database performance tuning method in Linux. BKJIA recommends the MySQL database getting started and proficient tutorial. Hardware preparation environment: Hard drive: 16 SAS

|| Slow_launch_time | 2 |+------------------+-------+Mysql> show global status like '%slow% ';+---------------------+-------+| variable_name | Value |+---------------------+-------+| Slow_launch_threads | 0 || slow_queries | 4148 |+---------------------+-------+The configuration of the record slow query, the execution time of more than 2 seconds is slow query, the system shows that there are 4,148 slow query, you can analyze the slow query log, find

performance testing process. Below I will introduce three tools that are frequently used in the performance tuning process of msyql: 1. Slow query (analyze problematic SQL statements) 2. Explain (shows how mysql uses indexes to process select statements and connect tables. Can help you select better indexes and write more optimized query statements) 3. Profile (query the SQL Execution time, and check t

always pay attention to it in the design, remember. MySQL database is so hot in the internet industry, in addition to its open source features, easy to use, there is a very important factor is the scalability of a greater advantage. Each of its different storage engines has features that can be used to address a variety of different scenarios. Its Replication and Cluster features are a very effective means of enhancing extensibility.Excerpt from: "

MySQL Performance tuning my.cnf detailedHttps://blog.linuxeye.cn/379.htmlProvides a MySQL 5.6 version suitable for MY.CNF profiles on 1GB memory VPS (click here to download the file): [Client] Port = 3306 Socket =/tmp/mysql.sock [Mysqld] Port = 3306 Socket =/tmp/mysql.sock Basedir =/usr/local/mysql