yourkit profiler

approach to handle the amount of memory used will depend on your program's requirements. using a profiler may give you suggestions for where to optimize code by showing which parts of your program are using the most memory. Memory counters: By default, ants memory profiler uses the private bytes counter, because this measure is considered the most useful for most kinds of memory problem. Windows Ta

approach only supports the join points located at method boundaries (on entry, on exit, on exception ). Tools: Spring framework for. net Windsor Castle Aspect # Naspect Rapier Loom Profiler API The unmanaged profiler API of. net Framework is initially intended to instrument the code, typically for memory and processor consumption. the same API can be used to execute exactly ally a

In general, the memory usage of a normal system is basically stable after it runs stably, and should not increase without limit. Similarly, there is also a relatively stable upper limit on the number of objects used for any class, and it should not continue to grow. Based on this basic assumption, we can continuously observe the memory size used during system operation and the number of instances. If the memory size continues to grow, it indicates that the system has memory leakage, if the numbe

SQL unit testingby Alejandro Pelc, 2009/04/08 total article views: 4276 | views in the last 30 days: 4276 rate this | join the discussion | briefcase | print Introduction Some time ago, I was asked to configure automatic builds in team system for a solution, and that build shoshould include as much unit tests as it cocould. this solution contained a mix of web sites, a wizard installer, OLAP cubes, Reporting Services reports and a set of databases. because it was in the middle of a refactor, the

statements in the Code and the fault code such as the result set is not closed or code redundancy. The second step is to detect Java Memory leakage. Here we usually use some tools to check the memory leakage of Java programs. There are already several professional Java memory leak check tools on the market. Their basic working principles are similar. They are all through monitoring the application, release, and other actions of all objects when Java programs are running, collects, analyzes, and

. Text, (Qs. statement_start_offset/2) + 1,(Case statement_end_offsetWhen-1 then datalength (St. Text)Else Qs. statement_end_offsetEnd-Qs. statement_start_offset)/2) + 1) Not like '% fetch %'Order by QS. total_elapsed_time/1000 DESC Use sqlserver profiler to find the SQL statement with the worst performance in the database First open sqlserver profiler: Click "new trace" in the toolbar, use the d

know where a deadlock may occur. After analyzing the detected deadlock, optimize the query, index, and isolation levels as much as possible to reduce the possibility of deadlock. There are two ways to view deadlocks: One is through the trace on the server side, and the other is through SQL profiler. First, let's look at the deadlock through trace. Check the deadlock through trace When a deadlock occurs, the deadlock information can be uploaded to th

This is the second phase of the PHP performance optimization series. How to Use the PEAR tool Benchmark to get the execution time of code or functions line by line. To do what you want, you must first sharpen your skills! How to install PEAR and Benchmark Please refer to the first part of the PHP performance optimization series [PHP performance optimization preparation illustration PEAR installation] Benchmark tool package description Download: http://pear.php.net/package/Benchmark/downloadThe B

Use in learning job zend_dbMethod of invoking the tracker$Profiler = $Db-Getprofiler (); /* How to use the tracker */ Introducing the loader class (auto-load Class) Require_once ("zend/loader.php"); Introducing a DB class using the Loader class Zend_loader::loadclass ("zend_db"); Introducing the ZEND_DB State device Zend_loader::loadclass ("Zend_db_statement_pdo"); Configure Databas

Debugging and execution time of the Benchmark class in the PHP performance optimization tool. This is the second phase of the PHP performance optimization series. how to use the PEAR tool Benchmark to get the execution time of code or functions line by line. To do what you want, you must first sharpen your skills! How to install PEAR and Benchma this is the second phase of the PHP performance optimization series, and how to use the PEAR tool class Benchmark to get the execution time of code or f

In the first section of this chapter, we also mentioned using query profiler to locate the performance bottleneck of a query. Here we will detail the usage and usage of profiling. To optimize a query, we need to know exactly where the performance bottleneck of this query is. Is there too much CPU computing consumption or too many Io operations required? To get a clear understanding of this information, it can be easily done in the MySQL 5.0 and MySQ

; headers [] = array ($ header, TRUE); return $ this ;} // --------------------------------/*** Set HTTP Status Header * moved to Common procedural functions in 1.7.2 * allow you to manually Set the Server Status header * @ accesspublic * @ parami Ntthe status code * @ paramstring * @ returnvoid */function set_status_header ($ code = 200, $ text = '') {set_status_header ($ code, $ text); return $ this ;} // --------------------------------/*** Enable/disable

the work of code walk, you can arrange for the system business and development language tools familiar to the developer of the application of the code to cross-check, try to find out the code in the database connection declaration and result set is not closed, code redundancy and other failure codes.The second step is to detect a Java memory leak. Here we usually use some tools to check the memory leak of Java programs. There are several professional tools on the market to check the Java memory

This is the second phase of the PHP performance optimization series. How to Use the PEAR tool Benchmark to get the execution time of code or functions line by line.To do what you want, you must first sharpen your skills!How to install PEAR and BenchmarkPlease refer to the first part of the PHP performance optimization series [PHP performance optimization preparation illustration PEAR installation]Benchmark tool package descriptionDownload: http://pear.php.net/package/Benchmark/downloadThe Benchm

Visual Assist X 10.1 (Development Environment Enhancement tool) enhance editing capabilities in the Microsoft development environment. With its powerful editorial features, visual Assist x improves productivity, can be fully integrated into your Microsoft development environment, upgrades your IDE, and can feel the benefits of visual Assist x without changing your programming habits.　 Visual Assist x is a very good visual Studio. NET 2003, 2002 plug-in t

Built-in profiler implementation is very simple, in ruby2.2 only 150 lines of code, you can see its implementation profile.rb. The built-in profiler is very convenient to use, just add-rprofile parameters. For example: Perform: Ruby-rprofile test.rb The output results are: By printing out the results can be very obvious to see the time-consuming method. The built-in

Administrator | data | The adjustment and optimization of database database may be one of the most important and critical tasks for a database administrator. Unfortunately, tuning and performance tuning for databases like SQL Server is not an easy task. SQL Server has several monitoring and debugging tools that are powerful but difficult to master. Fig. 1 Coefficient similar profiler Now, however, there is a coefficient. It is a new product release

Label:The use of MySQL ProfilingIn the first section of this chapter we also mentioned the performance bottleneck of using the query Profiler to locate a query, and here we describe in detail the purpose of Profiling and how to use it. To 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 M

In the previous article, we described the Perfmoncollector elements related to performance counters in the configuration file, which we will cover the PROFILERCOLLECTOR elements related to tracking data.In the previous article using the Sd_detailed.xml configuration file in my local collection of 5 minutes trace data file 7Mb, then did not do anything else, imagine if in a busy production environment, the resulting trace file size will be larger.The tracking data is related to the added tracking

　　Detection of deadlocks in SQL Server First of all, in a multi-concurrency environment, deadlock is unavoidable, can only be as far as possible through a reasonable database design, good indexes, appropriate query statements and isolation level to minimize. Therefore, the purpose of detecting deadlocks is to know where deadlocks can occur, and to optimize the query/index/isolation level to reduce the likelihood of deadlocks by analyzing the detected deadlocks. There are two ways to look at dea