sql performance tuning steps

Tags: phone media font insert mode send com debug = =ObjectiveAn engineer at Microsoft once had a very figurative metaphor for performance tuning: Peeling onions. I also very much agree, let us to a layer of a layer of the outside its mysterious veil. Six major factorsThe following are the most common diagrams we use to analyze database performance issues for ou

the "CPU" button to start a CPU profiling session, VisualVM will detect all applicationsThe method that is called. When entering a method, the thread issues a "method entry" event when exiting the methodA "Method Exit" event is also issued, and these events contain timestamps. Then VisualVM will put eachThe total execution time and number of invocations of the called method are displayed according to the run-time length.In addition, we can filter the analysis results by the method name filter b

deployment of one serverØ Deploy multiple Web serversØweb Load Balancing-f5Ø data read/write separationØ Synchronous/asynchronous computation between various applications using Message QueuingØ Select the appropriate communication mode between applications, communication protocolØweb distributed, distributed application, distributed dataØ distributed nodes using high-performance servers, small fleet, supplemented by high-speed network bandwidth, etc.

Tags: service simulation datapump tuning Management production practical fail controlOne: Download routeSecond: The book DrawingThree: the book catalogue The 1th chapter of database operation and maintenance1th. Database Installation Configuration1.1 Preparation for pre-installation 11.2 Installing database Software 51.2.1 Method 1:oui Installation 61.2.2 Method 2: Silent installation 81.2.3 Method 3: Clone installation 111.2.4 Diagnostic Case: Un

actually a CDN.Avoid CSS expressions.Put JS and CSS on the outside...............None of the above three have been tested or practiced. are seen in the book, after the first 4 optimizations, the page loading speed has reached my expectations, and then prepare the code to review the rectification code. The front performance tuning has always felt the optimization of Java code, optimized

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 no

SQLSever Performance Tuning (All) dbccopentran how to view disk IO operation information the SETSTATISTICSIOON command is used to display SQLServer information about the disk activity volume generated by the Transact-SQL statement. Me SQL Sever Performance

PrefaceA project in the development, testing, on-line, then the size of the user is still relatively small, so just on-line projects are generally stable performance. However, with the passage of time, the increase in the number of users, the increase in QPS and other factors will cause the project slowly show a half-day unresponsive situation. In the previous work also happened to encounter this process, at that time, the project carried out a lot of

Oracle Database 10g Performance Tuning tips and techniques is recommended. For Oracle performance test, diagnosis, analysis, and optimization, see! Chapter 2 Basic index principles (beginner developer and beginner dBA). For Oracle index optimization, refer! Chapter 4 tuning the database with initialization parame

JBoss Application Server Tuning Although many architects and software engineers agree that the performance of about 70-80% of applications depends on the code of the application itself, improper configuration of the server environment can significantly affect your user experience, and ultimately affect the performance of your application. Many configuration eleme

Basically, the main considerations for Hibernate performance tuning are as follows:? database Design Tuning? HQL optimization? Proper use of APIs (e.g., different collections and query APIs based on different business types)? Main configuration parameters (log, query cache, fetch_size, batch_size, etc.)Map file optimization (ID generation policy, Level two cache,

with version 3.23.52 and 4.0.3, you can use a new SQL command Show INNODB STATUS To read the output information of standard InnoDB Monitor to SQL client. This information is useful for performance tuning. 　 Another way to use InnoDB monitors is to have it continue to write information on the standard output of the

Original: SQL Server Tuning Series play turn three (use index hint (Hint) to boot statement maximum optimization run)ObjectiveThis article continues to play the content of the module, about the location of the index in SQL Server No need to say, this article will analyze how to use the Hint Bootstrap statement to fully use the index to run, as well as a solid gra

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 15 k raid 5 with 512 MCache CPU: AMD 4-core t

; Management Tools-> performance (or run inside MMC) and then pass[Attach]52716[/attach]Add counters to add common statistics for SQL then in the items listed below Select the user connection can always query the number of connections to the database.This method, however, requires access to that computer, which is to be logged in through a Windows account to add this counter.2. Through the system table to q

ArticleDirectory Tuning business process engine: 1. Tracing: 2. trfc: 3. ccbpm inbound queue processing: A. Classic setting inbound processing with buffering (default ): B. Inbound processing without buffering: Queue assignments for inbound processing: A. One writable able queue: B. multiple queues (random ): C. multiple queues (content-specific ): References: Part-III of this series will focus on the B

1. Macro-tuning can be considered three parts, respectively, hardware, network, software, the main consideration here is software tuning(1) Software tuning includes: table Design (Paradigm, field type, data storage engine), SQL statement Index, configuration file parameters, file system, operating system, MySQL version

cache = max memory * 50% Procedure cache size = max memory * 20-30% Number of user connections = N (default = 25) Number of lock = N * Maximum number of locks required by a single user * 120% (Generally, this is difficult to estimate. The reference value provided by senior syabse engineers: 1.8 million for users. I estimate that 100000 is recommended for 10 Gb of data) Number of open objects = 10000 Number of open indexed = 10000 This configuration can basically be used normally. You can down

|| 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 the problem of

operations, SQL operations, list refreshes, etc.) consume resources using the background process to implement, can not occupy the UI thread, the UI thread is the main thread, the main thread is the key to keep the program smooth, should only operate those core UI operations, such as processing view properties and drawing; Minimize the wake-up mechanism. We often use broadcasts to receive messages and events that are expected to respond, but too m