c profiler

The Entity data model is a concept that all Entity SQL and LINQ to Entities queries will eventually be translated into T-SQL scripts to query data from the database. There are several ways to view the generated T-SQL to help debug or analyze problems. 1. Using the SQL Server Profiler tool Unlike a LINQ to SQL comparison, the ObjectContext class does not provide a log property or a common log mechanism, so all T-SQL statements cannot be tracked in vi

result. Focusing on a small, repeatable workflow allows you to isolate the problem.The next question to answer is, why does it take 10 seconds? The first and simplest way to narrow down the problem is to run the application to SQL Server as much as possible on the same machine, or on the same local area network.If you effectively remove any network latency and bandwidth limitations, it suddenly takes a second or less time to select all the invoices, and then you need to investigate what network

history lock records. YesUnderstandingFor databases inQueryA snapshot of the time point locking status. Sys. dm_tran_locks contains two types of information: Information about the resource where the lock is located starting with resource, and information about the applied lock starting with request. 3. For more details, see MSDN (http://msdn.microsoft.com/en-us/library/ms190345.aspx) . Sys. dm_tran_locks This DMV contains a lot of information, so we usually write some statements to extract

This article mainly introduces the database tracker use example of the zf framework. We will share with you how to use the tracker. For more information, see How to call the tracker. The Code is as follows: $ Profiler = $ Db-> getProfiler (); The Code is as follows: /*How to use a tracker*/ // Introduce the Loader class (automatic loading class)Require_once ("Zend/Loader. php ");// Use the Loader class to introduce a Db classZend_Loader: loadCl

panel, select the Rendering tab, and then select Show Paint rectangles:When this option is turned on for Chrome, a green box pops up on the screen whenever a drawing occurs on the page. If you see the green box covering the entire screen, or covering some areas that you think should not be drawn, then it is likely that the drawing will be optimized and you will need to look at the details of this drawing.There's an option in Chrome devtools that lets you see more details about the drawing: the

occupied by generation 2 objects. This is not the maximum number of words that a two-generation object may use. Large Object heap size: size of the large object heap. # Bytes in all heaps: Sum of Gen 0 heap size, Gen 1 heap size, Gen 2 heap size, and large object heap size. It indicates the memory occupied by all managed objects. # Gen 0 collections: SinceProgramNumber of times a zero-generation object is collected after startup. # Gen 1 collections: the number of times a generation

Php5.3 or earlier versions can go to PECL (HTTP:// Pecl.php.netDownload the xhprof extension installation. However, the PECL version does not support php5.4. You can go to the xhprof library on GitHub to download: https://github.com/facebook/xhprof Download and unzip the package. 1CD xhprof-master/extension/2 Phpize3./Configure-- Enable-xhprof4 Make5 Sudo Make Install Change PHP. ini 1 [Xhprof]2Extension = xhprof.So3Xhprof. output_dir = "/document/gbyukg/www/test/xhprof" Restart Apa

number of distributed transactions submittedDistributed Transaction coordinator, aborted transactionsTotal number of distributed transactions rolled backDistributed Transaction Coordinator, Active transactionsThe number of distributed transactions currently activeDistributed Transaction Coordinator, Response Time–averageAverage time interval from start to commit for distributed transactionsSQL Server, cache Manager, Cache hit Ratio:sql Server cache HitsUsed SQL Server, cache Manager, cache Coun

Well, recently I have used this tool to optimize data, so I am too lazy to write it. I copied this old man'sArticle. Address: http://www.cnblogs.com/hsj2010/archive/2010/07/15/1777823.html Recently, the database server is a little slow. Let's see which aspects of the pressure is relatively high! In fact, this lucky28 database does not affect the entire server.But it may have a slight impact, and each small impact will have a great impact if it accumulates! Here is a brief introduction

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the application to another, it is easy to retain memory that is no longer needed or irrelevant. This article describes the basic lifecycle of an object, how to determine whether an object is released, and how to assess potential leakage behavior. In addition, learn how to use Heap Profiler in Google Chrome to diagnose memory problems. Some examples show how to solve the memory leakage caused by closures, console logs, and loops. Ii. Object Lifecycle

References Monitoring with SQL profilerReadtrace There is a profiler tool in SQL Server to track the execution process of SQL Server and monitor all the processes of SQL Server. If SSMs is used to operate SQL Server, the commands corresponding to the SSMs GUI are reflected in profiler. When performing troubleshooting, we usually require customers to capture the final trace file of this

Someone asked me how to capture and record the deadlock information on the Forum. Here, I will share some of my experiences with you, and I would like to ask you to correct them. We know that you can useSQLThe profiler tool provided by the server is used to track deadlock information. However, this method has a big flaw, that is, it consumes a lot. According to a foreign expert, profiler can even occupy ser

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algorithm, but only the most suitable one. 3. How to Find the hotspot code1) sort out programs to find out execution hotspots. Very good, but very effective2) auxiliary tool: Google CPU profilerMethod 1 is more based on experience and a brief introduction to the auxiliary tool Google CPU profiler.Google CPU profiler is part of Google-perftools (Google-perftools also includes tcmalloc, heapCheckedr, heap Profiler