aed tuning

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 tuning-primer.sh Execution: SH

Oracle SQL Tuning Oracle's SQL tuning is a complex topic, and even a whole book is needed to introduce the nuances of Oracle SQL tuning. But there are some basic rules that every Oracle DBA needs to follow, and these rules can improve the performance of their systems. The goal of SQL tuning is simple: . Eliminate unn

Tags: detailed service MySQL GOOGL data security decision dependent view quotesObjective This is the last of the MySQL Database Specification-tuning section, which is designed to provide precise positioning and tuning methods that we find are weak in system performance, parameter tuning in MySQL systems, and problems with SQL scripts. Directory

Label:Original: SQL Server Tuning Series advanced (how the query optimizer runs)ObjectiveIn the previous articles, we introduced a series of basic descriptions of operators and the optimization methods and techniques for each operator. This includes a series of our common operators, including how to view execution plans, how several datasets are commonly used, how to join operators, and parallel operators. Interested children's shoes can be clicked to

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 tuning excellence, interspersed w

Talk about linux performance tuning 12: Red Hat optimization strategy Tuned talking about linux performance tuning 11: Memory Allocation Management http://www.2cto.com/os/201307/228761.html A dynamic tuning solution launched by RedHat allows you to use different tuning schemes in different time periods. By... talking a

. For example, when an index is deleted, the execution Plan of the corresponding SQL Plan baseline is deleted, this will not help avoid performance degradation. I personally think this is a comprehensive choice of Oracle, and it is not a limitation of SQL Plan Management. The SQL Tuning function of the Oracle database can generate an SQL profile to help the optimizer generate a well-adjusted plan. However, this mechanism is passive and does not guaran

I started to write this post before weeks ago and finally publish it even if it's not totally finish. it is just a little feedback about tuning a full lamp server with some user traffic and services load. important thing to notice is that all stuff in this post isNot the solution. You will probably have to tune little more for adapt all this to your personal server usage, server load, development architecture. so, use those tips as a kind of inspirat

JVM tuning (the most critical parameters are:-xms-xmx-xmn-xx:survivorratio-xx:maxtenuringthreshold)Generation Size tuning:Avoid the Cenozoic size setting too small, avoid the Cenozoic size settings too large, avoid survivor set too small or too large, reasonable set up the new generation survival cycle.-xmn Adjust the Cenozoic size, the larger the new generation usually means that more objects will be recycled in the minor GC phase, but it may be poss

In use. NET to start and develop the application quickly, the next problem may be the performance tuning aspects of the program, and performance tuning can sometimes involve all aspects of the problem, such as the program host system, database, network environment, and so on, and when the program is unusually large and complex, performance tuning will become even

First, memory tuning The kernel's options for memory are in the/PROC/SYS/VM directory. 1.pdflush, used to write back the dirty data in memory to the hard disk. Can be adjusted by/proc/sys/vm/vm.dirty_background_ratio. The first view of this value should be 10 by default. [Root@esf ~]# Cat/proc/sys/vm/dirty_background_ratio 10 This value is a threshold indicating that if the dirty data in memory reaches 10% of the total memory of the system, then

Label: Objective About SQL Server Tuning series is a huge content system, not a word two words can be analyzed clearly, this article first in the SQL tuning in the most commonly used query plan to parse, to do a good job of the basic grasp, tamping basic skills! Then we talk about the overall statement tuning. Learn how to read and understand query plans, and enu

Tags: mysql performance optimization tuning-primer.shTuning-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 +xtuning-primer.sh Execution: SH

Spark Performance Tuning Series catalog: General Tuning Performance tuning to allocate more resources in real-world projects Performance tuning to adjust parallelism in real projects Performance tuning using Kryo serialization in real projects Performance

ObjectiveIn the previous few we analyzed a series of SQL Server-related performance tuning, which I divided into two modules.The first module focuses on the basic content of the master, a total of 6 articles to complete, covering a series of basic algorithms, the detailed analysis of how to view the execution plan, master Execution Plan optimization points, and a list of the everyday we usually write T-SQL statements will be applied operators. I belie

The following articles mainly describe the ultimate SQL Performance tuning Technology of DB2, including the impact of pointers on the Performance of DB2 databases, DB2 performance tuning technology and a detailed description of more future tuning technologies, the following is the main content of the article. DB2, SQL, tuning