Label:When programming with EF, sometimes we can't look at the SQL statements that EF eventually generates, and it doesn't parse the problem well. Let me explain the use of SQL Server Profiler. SQL Server Profiler can view the resulting SQL statements.First open Microsoft SQL server Management Studio, and then open the Tool->sql Server Profiler,If the application
Tags: MongoDB optimizerIn the MySQL database, the slow query log is often used as the basis for database optimization, and MongoDB still has similar functions. MongoDB's own profiler allows easy recording of all time-consuming operations for ease of tuning;First, start the profiler functionThere are two ways to turn on the Profier function:The first is to set it directly in the startup parameters, and add t
Original: Using SQL Profiler to handle expensive queriesWhen the performance of SQL Server becomes worse, the following two things are most likely to occur:
First, some queries produce a lot of pressure on system resources. These queries affect the performance of the entire system because the server is not able to serve other SQL queries quickly enough.
Additionally, expensive queries block other queries that request the same database res
. 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 rules
In use. NET to quickly get started and develop applications, the next problem may be the program performance tuning problems, and performance tuning sometimes involves a l
Unity Optimization Series article: http://www.unity.5helpyou.com/tag/unity%E4%BC%98%E5%8C%96 This article was truncated from: http://www.unity.5helpyou.com/2791.html 1. CPUA. Waitfortargetfps:Vsync (vertical sync) function, which displays the CPU wait time of the current frameB. Overhead:Profiler overall time-the total record time for all items. Used to record unclear time consumption to help further refine profiler statistics.C. Physics.simulate:CPU
DebuggingProgramSometimes or some ides may not provide detailed database exception information. SQL Server Profiler is a graphical user interface for SQL tracking. It can monitor database engines and analysis services. When using LINQ to SQL or ADO. NET Entity Framework, you can use it to clearly understand the statements they have executed on the database. We can also use it to track database exceptions.
SQL Server
A major advantage of SQL Server databases is the rich UI management and debugging tools, which is definitely better than Oracle and other large and medium-sized databases.
Among the many tools of SQL Server, it is very important for developers and DBAs to use SQL profiler.
Each action executed in SQL Server can be clearly viewed in SQL profiler, which is very helpful for performance tuning and later mai
When you do chip verification, you will generally encounter the problem of slow simulation speed and low efficiency.A method is now found to debug the above problem. That is, using the NC Profiler tool.With regard to the profiler tool, I post the original document "Cadence®nc-verilog®simulator Help":The Pro?ler is a tool which measures where CPU time is spent during simulation. Although it is developed prim
Unity3d provides us with a powerful profiler for profiling tools. Today we use Profiler to analyze in detail the official example Angrybots memory usage information data.First Open Profiler Select memory option, in the game run a frame to view the detailed option data (Simple mode of data is very intuitive, you can know that the memory is largely occupied, there
Address: http://google-perftools.googlecode.com/svn/trunk/doc/cpuprofile.html
The CPU profiler usage process consists of three steps: connecting to the application, running the code, and analyzing the output result.
1. link the library into the application
To use CPU profiler during execution, you need to add the parameter-lprofiler during code link.
You can also use ld_preload, e.g.%Env ld_preload = "/usr/
Recently I saw Lao Zhao blog "using profiler to analyze program performance" (http://www.cnblogs.com/JeffreyZhao/archive/2009/12/22/profiler-sampling.html ),
It was mentioned that in order to solve the problem of failure to trace method calls within the framework, Lao Zhao introduced the method of tracing with Profiler. many of his friends did not use profilter i
three hours, the index reorganization process exited at around due to a timeout error, so the table can be operated later.Now, the solution is to end the process, but the problem is that the Enterprise Manager cannot enter the Current Activity to view the process, in this case, you cannot end the process through the Enterprise Manager. In the past, you never killed the process by using commands. You do not know which command is used. Therefore, use another machine to open SQL
Unity built-in Profiler Profiler, Xcode analysis toolsProfiler:1.CPU Usage:Waitfortargetfps:vsync (vertical sync) function, which displays the CPU wait time of the current frameOverhead:profiler overall time-the sum of the recording time for all items. Used to record unclear time consumption to help further refine profiler statistics.Physics.simulate: CPU elapsed
Tags: debug obj HTML one database combination LINQ technology logs. comRecent queries for data combinations of LINQ to Object and LINQ to entity require the use of SQL Server Profiler to detect statements executed on the data, which is a great help when debugging SQL statements. Here is a brief description of the features commonly used in the SQL Server Profiler usage process. (Reprinted from: http://www.cn
An important application scenario for SQL Server Profiler is to monitor the analysis deadlock.Here's an example to learn how profiler monitors deadlocks.1. Create test data to simulate deadlocks, create tables table_a and table_b , and insert test data.CREATE TABLEtable_a (IDint, Numint)CREATE TABLETable_b (IDint, Numint)INSERT intoTable_aVALUES(1, -)INSERT intoTable_aVALUES(2, -)INSERT intoTable_bVALUES
In applications with large data volumes, you often need to optimize database configurations and SQL statements to ensure the concurrency of applications when loading large data volumes. MySQL has a built-in analyzer Profiler. With Profiler, developers can easily and quickly understand the approximate performance of MySQL.
It is very easy to use Profiler. You onl
Permissions required to run SQL Server Profiler (performance) *********/--eg. --Use the Trace account (performancetest) to track SQL Server events. --Create a Trace login account (performancetest) and grant its ALTER trace and view SERVER State permissions. Use Master CREATE LOGIN performancetest with password= ' [email protected] ';GOGRANT ALTER TRACE to Performancetest;GRANT VIEW SERVER state to Performancetest;GO--Create a Trace user account (Perfo
Tags: blog http using ar for file data art SP/******** permissions required to run SQL Server Profiler (performance) *********/--eg.--Use the Trace account (performancetest) to track SQL Server events.--Create a Trace login account (performancetest) and grant its ALTER trace and view SERVER State permissions.Use MasterCREATE LOGIN performancetest with password= ' [email protected] ';GOGRANT ALTER TRACE to Performancetest;GRANT VIEW SERVER state to Per
to block other queries. The blocked query further blocks the query, introducing a blocking chain in the data.Identifying expensive queries and optimizing them has the following meanings:
Improve the performance of the expensive query itself;
Reduce the overall pressure on the system resources;
less database blocking;
The more expensive queries can be divided into the following two categories:
Word execution: The single execution cost of the query is large;
Mul
In two or more SQL server processes, a deadlock occurs when each process locks the resources that other processes attempt to lock. For example,The process process1 holds one exclusive lock (x) for Table1, and process1 requests one exclusive lock (x) for Table2 ),The process process2 holds one exclusive lock (x) for Table2, and process2 requests one exclusive lock (x) for Table1)
In this case, a deadlock occurs. Unless an external process is disconnected, the two transactions in the deadlock will
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.