mysql performance tuning parameters

Original article: http://www.mastertheboss.com/jboss-performance/jboss-as-7-performance-tuning 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 it

Chapter 2 procedural performance tuning of PL/SQL applications I. Reasons for PL/SQL Performance problems When the execution efficiency of PL/SQL-based applications is low, it is usually caused by poor SQL statements and programming methods, poor understanding of PL/SQL basics or misuse of shared memory. Bad SQL statements in PL/SQL PL/SQL programming see

SQL Server Performance Tuning 3 (Index) MaintenanceHeat1 reviews Brook Stream GrassSQL Server Performance Tuning 3 (Index) MaintenanceObjectiveThe previous article describes how to improve the query performance of a database by building an index, which is really just the be

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 service program mysqld. When the switch is turned on, the InnoDB monitors displays data ap

1. choose PerconaServer, MariaDB, MYSQL1, and Mysql storage engines. MySQL provides two storage engines: MyISAM and InnoDB, and MySQL4 and 5 use the default MyISAM storage engine. From MYSQL55, MySQL has changed the default storage engine from MyISAM to In MYSQL Enterprise common architecture and

Check 12 Performance Tuning commands in linuxGuidePerformance Tuning is one of the most important tasks for O M engineers. If your production environment experiences slow system response speed, abnormal hard disk I/O throughput, and the data processing speed is lower than the expected value, or if the CPU, memory, hard disk, network, and other system resources a

shows the CPU usage and I/O busy during this period. This is very helpful. I pay for it again: the output information of sp_configure does not need to be sent in the future, so it is useless. Give sp_sysmon information. Note: The allocation of database size, tempdb size, and log size can improve ASE performance by using parallel Io. The formula is as follows: Database size = DB Tempdb = dB * 20% (experience) Log size = dB * 20% Sp_sysmon This ar

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

An outline that is roughly written in the optimization content of the physical design and logical design of the DB, mainly physical design, logical design introduction of the content is not much, the outline of the physical structure design and example optimization of organic combination of the logical structure design and application adjustment together ... Oracle Performance Tuning Guidance outline Desi

worse. Look for "checkpoint_warning" messages in the service log to determine whether your checkpoints are performing too frequently. This message appears if the checkpoint is executed more than once in 30 seconds. The frequency of reducing checkpoints includes increasing the number of Wal files in Data/pg_xlog. Each file is megabyte, so it affects disk usage. The default configuration uses a minimum number of log files. To reduce the checkpoint frequency, you need to add this parameter: Checkp

analysis of Web container thread pool server > Application server > (server name) > Thread pool > Webcontainer minimum Size: 10 Maximum size: 50 monitor Web container thread pool maximum by TPV (within acceptable time range), set EJB cache server > Application server > (server name) > EJB tell cache set > EJB cache setting > Cache large Small cache Size: 2053 Purge interval: 3000 For example through TPV monitoring found that Ejbstore () has a high call rate and CPU utilization is very low, can

) Indexbounds: The index used Third, optimizer profileIn MySQL, the slow query log is often used as the basis for us to optimize the database, is there a similar function in MongoDB? The answer is yes, that's the MongoDB database Profiler.1. Turn on the profiling functionThere are two ways to control the Profiling switch and level, the first is directly in the startup parameters directly set. When

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

First, the main method of neural network performance tuning the technique of data augmented image preprocessing network initialization training The selection of activation function different regularization methods from the perspective of data integration of multiple depth networks 1. Data augmentation The generalization ability of the model can be improved by increasing the amount of data without changing t

Talking about linux performance tuning 9: changing system default limits; talking about linux performance tuning 8: Removing unnecessary overhead http://www.2cto.com/os/201307/228393.html After reading the first two articles, we are trying to save resources for our real services. Problem: our service is actually used..

user data on each disk, Causing greater I/O rates to the physical disk and allowing disk bottlenecks to occur. The most common disk bottleneck is that the hard disk is too small; Most disk configurations are based on capacity requirements rather than performance; The cheapest solution may be a small number of large-capacity disks; The second most common problem is having too handle logical disks on the same array. This increases seek time and signif

main way of performance analysisMonitoring: Monitoring is a general way to view the runtime behavior of an application. There are often multiple views (view) that show CPU usage, memory usage, thread status, and other useful information in real time, respectively, so that users can quickly discover the key to the problem.Dump: The profiling tool obtains current state data from memory and stores it in a file for static

: /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