Want to keep your project running at high performance? Here are some tips you can take to eliminate cache bottlenecks, as well as some other performance tuning recommendations.Most developers think that performance optimization is a complex topic that requires a lot of work experience and relevant knowledge theory. Well, it's not entirely wrong. Optimizing an application for performance optimization may not be an easy task, but it doesn't mean that yo
There are very few courses on Java performance Tuning, so a comprehensive and in-depth introduction to Java performance Tuning, North wind is exclusive, special lecturer, more than 10 years of Java development work experience, Senior software development system architect, this set of courses are years of work experience and experiences of the summary, The course has a high gold content and practical value,
Why do you want performance tuning?
Most Linux distributions are designed to be fully compatible with most computers in the marketplace. This is a fairly mixed set of hardware (hard drive, video card, NIC, etc.). So Red Hat, Suse,mandriva and some other distribution vendors have chosen some conservative settings to make sure the installation is successful.Simply put: Your distribution is running well, but it can work better!For example, there may be
statement that will form a specific plan, and the resulting specific plan is not always optimal, which is related to the content distribution, the amount of data, the type of data in the database's existing data tables, and the statistics that are used to record these details.All optimal planning choices are based on existing statistical information, and if our statistics are not updated in a timely manner, then the optimal execution plan will not be the best, and sometimes the worst.Reference
Label:You want to use the SQL Tuning Advisor to generate recommendations for badly written SQL statements in your development environment. WHich Three sources can you select for the advisor to analyze? (ChooseThree.)A. Top SQLB. SnapshotsC. SQL Tuning SetsD. Index Access PathE. Optimizer statisticsF. Materialized view logsAnswer:a,b,cYou want to use the SQL Tuning
the performance of ES. At the same time, assuming that the machine 1 has a routing attribute a document, Machine 2 has a routing attribute B document, then I in the query when the target route attribute is a, even if the machine 2 failure paralysis, the machine 1 structure is not a great influence, so do the query under the disaster situation also proposed a solution. The so-called route, in essence, is a split-bucket (bucketing) operation. Of course, more than one route attribute can be specif
Label:You want to use the SQL Tuning Advisor to generate recommendations for badly written SQL statements in your development environment. WHich Three sources can you select for the advisor to analyze? (ChooseThree.)A. Top SQLB. SnapshotsC. SQL Tuning SetsD. Index Access PathE. Optimizer statisticsF. Materialized view logsAnswer:a,b,cyou want to use the SQL Tuning
records of the process of starting, running, and closing the MySQL runtime, and in the event of a problem, you can view the log, which not only records the error message, but also notes some warnings and, of course, some running information. You can view the file path for the error log by using the following command: like ' Log_error '; Navigate to the file of the error log through the above command, and if so, you can view the log details on the appropriate server as follows: /var/log/mysql/
Label:100 recommendations for MySQL tuning/optimization Submitmy comments
Load in have commented100 recommendations for MySQL tuning/optimization2015-07-08Database developmentDatabase Development Database Development number Dbdevs Function Introduction Share database-related technical articles, tutorials, and tools, plus database-related work. Occasionally talk about the programmer's life:) (Cl
Article Source: http://www.cnblogs.com/dingjie08/archive/2009/11/10/1599929.htmlObjectiveRecently help friends to run the platform for Performance tuning, the effect is good, so write it out together to exchange. If the article has you feel wrong, or do not understand, please add QQ Group: 4656272, Welcome to correct and discuss together. (PS: Vulgar Humanities pen is poor, crossing please more magnanimous)BackgroundFriend's platform website belongs t
Reference indicators for performance
Execution time-from the time the code starts running to the end
CPU time--the time that a function or thread consumes the CPU
Memory allocation-a scenario in which a program consumes memory at run time
Disk throughput--Describe the use of IO
Network throughput--describe the use of the network
Response time-The response time that the system makes to a user's behavior or time
The bottleneck resources
, process properties, and resources for the build process. If you understand the process constructs, you can understand what is important for the running and performance of the process. Figure 1-2 shows an overview of process information related to process architecture.Linux process management for Linux Performance and Tuning Guide (translation)Figure 1-2 Task_struct Structural BodyThe life cycle of the 1.1.2 processEach process has its life cycle, su
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
The SQL Tuning toolset (SQL Tuning set,sts) is an integral part of the Oracle 10g SQL Tuning Advisor feature. Each tuning toolset contains one or several SQL statements, as well as the contextual information needed to properly interpret them. SQL Tuning Advisor uses an adjus
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
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