performance profiling tools

Perf profiling analysis program performancePerf profiling analysis program performance Program Performance Analysis Perf collects call stacks of a program at a certain frequency and performs statistical analysis on the call stacks. If a code path appears more ordinary in the collection result, it means that the program

Tag:pac Analysis artfilehome sysdatetarstrrdbms You need to run $oracle_home/rdbms/admin/proftab.sql to create some key tables before executing. Begindbms_profiler. Start_profiler (' My_application ' | | To_char (sysdate, ' yyyymmddhh24:mi:ss '));--execution procedure My_application_code;dbms_profiler. End_profiler; END; Selectto_char (p1.total_time/10000000, ' 99999999 ') | | ' -' | | To_char (p1.total_occur) astime_count,substr (p2.unit_owner,1,20) | | '. ' | | DECODE (P2.unit_name, ', ' Orac

Tags: class mysq tor http profile sharing optimization online toolTo optimize a query, we need to know exactly where this query's performance bottleneck is, is it consuming too much CPU, or does it require too many IO operations? To be able to understand this information clearly, in MySQL 5.0 and the MySQL 5.1 official version can be very easy to do, that is, through the Query Profiler function.MySQL's query Profiler is an easy-to-use Query diagnostic

Tag: Init row off SSI time down table function valueFirst, show profilesSee if the Profiles feature is turned on mysql> show variables like ‘profiling‘; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | profiling | OFF | +---------------+-------+ 1 row in set (0.03 sec) Open profiles in the current session mysql> show variables like ‘

Day 3 (11/17/2010) Step 3: Practice1. find an Animation demo (requires a bit of attention, rich pixels, and faster Animation speed to improve the difficulty of the Screen Display), and add a timer in it, modify the RenderOptions of the current process at intervals. processRenderMode, the Code is as follows: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Timer timer = new Timer ();Timer. Interval = 500; // change once in half a secondT

Introduction to Oracle Database-level optimization analysis toolsWhen we optimize the diagnosis of the database, we need to collect the appropriate information for reference, from the personal experience, the statistical data are divided into two major categoriesOne category is database-level statisticsThe second class is OS-level statisticsHere's a breakdown of what tools are commonly used to gather information at different levels to help optimize di

test result, the heap uses 300ms, the stack uses 5ms, the difference is 60 times times.Conclusion:1) If the application logic allows, use stack-based auto variable, do not need the heap variable.2) If a large heap is required, it is recommended to use std::vector as your own heap manager. Avoid using heap to create Ad-hoc object directly and extensively.3) Some temporary computing classes can be considered to prohibit generation in the heap, see http://stackoverflow.com/questions/1941517/explic

Performance bottlenecks:Slow, write faster than read The main performance indicators:Frequency of visits,The number of concurrent connections,Cache Hit Ratio,Index use,Slow log opening and analysis,Query log, querying logThreads_cached: Whether the connection thread cache is turned onThread_cache_size: The size of the number of thread cachesQuery_cache_size: Query Cache SizeJoin_buffer_size:join Buffer Size

database indexes to create for should your? This is Swing-based SQL Profiler tries to offer a tool to monitor which tables and columns are accessed the most in SQL Queri ES to recommend index creation. Irontrack SQL:Http://www.irongrid.com/ironeyesqlIrontrack SQL increases the visibility of performance problems from builds to builds through time-based views of JDBC Perfor Mance Metrics. Irontrack SQL easily enables Java

Powerful performance optimization tools you may ignore in PHP: generators and powerful performance optimization tools Preface If you are a Python or other language partner, you should be familiar with generators. However, many PHP developers may not know the generator function. It may be because the generator is a func

-processing of Heap Dump filesThe Heap Dump file can be obtained through the JVISUALVM user interface, which is also available through Jcmd and Jmap. The heap Dump file is a snapshot of the heap, typically using JVISUALVM and jhat to parse the snapshot.Back to top of pagePerformance analysis ToolsThe performance analyzers provided by Java are the most important analysis tools. It has a wide variety of stren

12 best image compression tools and performance optimization compression tools for website performance optimization The image compression tool allows you to easily compress, edit, and resize images. These tools support multiple image formats, such as JPEG, PNG, and GIF. They

Introduction to common linux performance monitoring tools and linux performance monitoring tools Record several frequently used ones.1. top/htop As we all know about top, there are several common parameters: (you can also start and interact) -D: Set the delay time-S: accumulative time mode k: End Process q: Exit topZ:

Label:This paper mainly explains MySQL performance bottleneck analysis, performance indicators, performance index information collection tools and methods, analysis of the use of tuning tools.The article has not been completed, the following is an outline.Performance bottlenecks:SlowPerformance Index:Frequency of Visit

Installing PHP xdebug Debugging tools and performance analysis tools Webgrind for WindowsFirst step : view information such as PHP versionPhpinfo ();above is x86 NTS VC14Step two : download xdebugofficial website https://xdebug.org/Step three :download Extension , add php /ext Extension directoryFourth Step : php.ini Open ExtensionTo configure additional option

. New features include timeline analysis (timeline profiling) and SQL query analysis.The dottrace extension Visual Studio Gallery Web page provides a very clear and concise product Overview. By reading the overview if you are interested in the product, you can go to the JetBrains website and decide to download or purchase it.JetBrains currently offers a free trial with a time limit and several licensing options, such as the ReSharper Ultimate package,

, and can also be used to analyze SILVERLIGHT4 or 5 of stand-alone desktop applications, Web applications, Windows Communication Foundation (WCF) services, and so on. New features include timeline analysis (timeline profiling) and SQL query analysis. The dottrace extension Visual Studio Gallery Web page provides a very clear and concise product Overview. By reading the overview if you are interested in the product, you can go to the JetBrains website

Java performance analysis tools, Part 1: Operating System Tools, java operating systemsIntroduction The premise of performance analysis is that the running status of the application and the running environment of the application are displayed more directly in a visual manner. How can we achieve this visual display? We

SQL analysisSQL analysis (SQL Analyze) is a tool that integrates the performance analysis of specific SQL statements in Enterprise Manager. The SQL statement that completes the same task, writes according to the different syntax, can obtain the different execution performance. Oracle SQL Analytics Tools provide intuitive visibility into the

Sometimes, we pay special attention to program performance, especially the underlying software, such as drivers and OS. In order to better optimize the program performance, we must find the performance bottleneck. "Good steel is used on the blade" to achieve good results. Otherwise, we may do the work in vain. To find the key path, we can use profilng technology.