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Label:Poptest is the only training institute for developing Test and development engineers in China, aiming at the ability of the trainees to be competent in automated testing, performance testing and testing tools development. If you are interested in the course, please consult qq:908821478, call 010-84505200. 1 Overview of Performance optimizationsThis chapter provides an introduction Toperformance tuning and contains the following sections: This se
Performance Tuning overview: I. Overview 2. what is performance tuning? (What) 3. Why performance optimization? (Why) 4. When do I need performance optimization? (When) 5. where do I need performance tuning? (Where) 6. Who will perform performance optimization? (Who) 7. how to optimize performance? (How) VIII. Summary Note: hardware configuration: CPU Xeon E5620
WebSphere Pool resource tuning-thread pool, connection pool, and ORBFrom: https://www.ibm.com/developerworks/cn/websphere/library/techarticles/1106_zhuxl_websphereenhancement/1106_ Zhuxl_websphereenhancement.htmlIBM WebSphere Application Server (was) can support an increasing number of applications that have their own unique features, requirements, and services. Just as no two applications are using the application server in exactly the same way, we c
efficiency. Some of the original tuning settings, such as Mapjoin, PPD predicate push-down, and so on, have realized the automatic tuning in the continuously evolving products. Different stages of product tuning parameters and details will be inconsistent, but familiar with the tuning ideas and methods can be done ext
ObjectiveIn the field of big data computing, Spark has become one of the increasingly popular and increasingly popular computing platforms. Spark's capabilities include offline batch processing in big data, SQL class processing, streaming/real-time computing, machine learning, graph computing, and many different types of computing operations, with a wide range of applications and prospects. In the mass reviews, many students have tried to use spark in various projects. Most students, including t
Announcement 2-year SQLServerDBA tuning Summary 2-year SQLServerDBA tuning Summary 2-year dba tuning summary when 2-year dba I think there are some things that need to be discussed with you, first book. Documentary 1. In-depth analysis of SQLServer2008 series this is the technical insider series of mssql2005. If you are interested in version 2012, you can see tha
Nginx parameter Tuning worker_processes 3; CPU core number-1, the use of the effect is better #worker_processes 4; #worker_cpu_affinity 0001 0010 0100, #error_log Logs/error.log; #error_ Log logs/error.log notice; #error_log logs/error.log info; #pid logs/nginx.pid;events {use epoll; Worker_connections 8192 ;} HTTP {include mime.types; Default_type application/octet-stream; Server_tokens off; 1. Nginx and Tomcat
Basic configuration and tuning policies for high-availability and high-performance computer systemsQingdao railway station Computing Center Yu Dong Liu Mei Computer users need such a computing environment: ReliabilityThe performance must be sufficient to handle various loads in complex environments. Users place various applications in computer systems, and the application software activates preset program segments based on various commands sent from t
SQL Server Tuning Series Article summary: This is a series of articles on SQL Server tuning, which basically covers the decomposition of the query operations we write in the day and the tuning content items, all original ... The first basic module focus on the basic content of the master, a total of 7 articles to complete, covering a series of basic algorithms, d
Label:The main steps used by SQL Tunning Advisor: 1 Setting up Tunning task 2 Execute Task 3 showing tunning results 4 Follow the recommendations to run the corresponding tuning methodHere's how to do it in this order: 1 Setting up test tables and indexes Sql> CREATE TABLE test_sql_advisor as SELECT owner,object_name,object_id from Dba_objects;Table createdSql> Select COUNT (*) from Test_sql_advisor;COUNT (*)----------757229 2 Authorized SYSDBA Permis
range. That doesn't make sense either. For performance testing, we also need to define a time period. For example, it lasts 15 minutes on a certain throughput. Because the system becomes unstable when the load arrives, the system will stabilize after a two-minute time. In addition, it is possible that your system behaves normally in the first few minutes of the load, and then it is unstable and even collapsed. So it takes so long. This value, we call the peak limit. The performance test
Linux Performance Tuning Overview -What is performance tuning? (What)-Why performance optimization? (Why)-When do I need performance optimization? (When)-Where do I need performance tuning? (Where)-Who will perform performance optimization? (Who)-How to optimize the performance? (How)-Conclusion# What is performance tuning
Label:Original: SQL Server Tuning series play Turn II (how to run with the aggregation joint hint (Hint) bootstrap statement)ObjectiveIn the previous article, we analyzed the usage of query hint as the first of the last play module of tuning series. Interested can click to view: SQL Server Tuning Series play turn (how to run with query hint (Hint) bootstrap state
Recently it has been a tangle of performance analysis and tuning how to start with hardware first, or from code or database first. From the operating system (CPU scheduling, memory management, process scheduling, disk I/O), Network, Protocol (HTTP, TCP/IP), or from application code, database tuning, middleware configuration and so on.Single middleware also sub-web middleware (Apache, IIS), Application middl
Since the advent of Java is very popular, rapid development, the C + + language to form a strong impact. In the global cloud computing and mobile Internet industry environment, Java has a significant advantage and broad prospects, then the growing number of Java-based projects, the requirements of the Java operating environment is increasingly high, Many Java programmers only know the expansion of the business and do not know the Java itself to run the environment of debugging, such as virtual m
Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It has a large number of tuning parameters and techniques to improve the performance of your Oracle database. Or
Over the past decade, Oracle has become one of the most professional databases in the world. For IT professionals, it is important to ensure that Oracle's powerful features are used to improve the productivity of their companies. One of the most effective ways to do this is through Oracle tuning. It has a large number of tuning parameters and techniques to improve the performance of your Oracle database.
. NET Performance Tuning series articles Series Article Index . NET Performance tuning: Use of the ANTS performance Profiler . NET Performance Tuning two: Code metrics with Visual Studio . NET Performance Tuning three: tuning tools and methods for YSlow related r
Label:Original: SQL Server Tuning Series advanced (in-depth profiling statistics)ObjectiveAfter the analysis of the previous few, in fact, in general has been the first glimpse of the importance of SQL Server statistics, so this article will be sacrificed this artifact.This content will be very long, sit good bench, melon seeds snacks and so on ...No nonsense, go to the chase.Technical preparationThe database version is SQL SERVER2008R2, which is anal
garbage collection process are explained. The five articles will explain the principles of Java Program Performance tuning, especially the necessary knowledge in this process and the need to determine whether your program needs tuning. It also describes the problems you may encounter during tuning. At the end of this article, I'll give you some advice on how to
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