sleep profiler

: 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; Multiple executions: The query itself costs little, but the repeated execution of the query leads to pressure on the system resources; 　　1, a single execution of large-cost queryYou ca

Understand the Thread. Sleep function and the thread. sleep function. We may often use the Thread. Sleep function to suspend the Thread for a period of time. Do you understand the usage of this function correctly? Consider the following two questions: Let's first review the operating system principles. There are many strategies for CPU competition in the operati

1. The sleep () method will give other threads a chance to run without considering the priority of other threads. Therefore, it will give lower threads a chance to run. Yield () the method only gives the thread with the same or higher priority a chance to run.2. When the thread executes the sleep (long millis) method, it will go to the blocking state. The parameter millis specifies the

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

It's like stripping. net syntax sugar tool (reflector and so on) a lot of the same, we can be used for analysis. there are many tools for net program performance, such as the performance analysis tool provided by vs introduced in the previous blog debuglzq. In addition, common tools include CLR profiler and windbg. 　　Vs built-in Performance AnalysisYou can quickly find the bottleneck code and support multithreading. 　　WindbgI will not talk about it mo

SQL Profiler Data columns SQL Profiler allows you to select a data column when you create a template. These data columns represent the information that you want to return when you run the trace. The data that is displayed in SQL Profiler can be displayed in the order in which the event occurred, or grouped by one data column or combination of data columns. For e

Tags: How to do version sharing www. Select HTTPS Choose Index RttiSQL Server Profiler can detect statements executed on the data, especially if some projects do not directly use SQL statements, directly using the ORM framework of the system to process the database project, when debugging SQL statements, it is very helpful.Previously wrote the article "SQL Server Profiler Tracking database deadlock" Using S

Workarounds for SQL Server Profiler cannot be paused and stoppedAlthough SQL Server Profiler works well, there is an issue where you cannot pause and stop after you start profiler on the local database (locally) (Once you pause or stop for a long time), this problem occurs primarily because profiler uses the install SQ

Blocking sleep implementation mechanism and blocking sleep Mechanism Before looking at the implementation mechanism of blocking sleep, let's look at the waiting queue that is widely used in the kernel.The waiting queue of the Linux kernel is a double-loop linked list structure, which is closely integrated with the process scheduling mechanism and can be used to

Set the non-sleep download mode for win10 computers and the sleep mode for win10 computers Sometimes we need to download things at night. The win10 system will automatically sleep for 30 minutes by default, and then the download will stop. Start Menu click Settings Click System Click power and sleep

/** Sleep Sort* Use thread hibernation (waking time) to sort the numbers*/public class Demo {public static void Main (string[] args) {Int[] Sortnum = { -1,0,1,4,7,3,8,9,2,6,5,555};sortthread[] sortthreads = new Sortthread[sortnum.length];for (int i = 0; i Sortthreads[i] = new Sortthread (Sortnum[i]);}for (int i = 0; i Sortthreads[i].start ();}}}Class Sortthread extends thread{int num = 0;public sortthread (int num) {This.num = num;}public void Run ()

In fact, after the discovery is still relatively simple, but there are a few more attention to the placeI. Using Unity for Android development, it is important to remember to back up the Android development environment, which is the SDK. As soon as the SDK is updated, it is possible to change the file structure within the SDK, so unity cannot find the file correctly, and the build will continue to error. Although there are various solutions online, but I personally think the first is trouble, th

To create a stored procedure for the profiler: Use [Xxxdb]GO/** * * * object:storedprocedure [dbo]. [CreateProfile] Script DATE:2015/12/16 17:23:32 * * * * **/SETAnsi_nulls onGOSETQuoted_identifier onGOCREATE proc [dbo].[CreateProfile] as--Create a QueueDeclare @rc intDeclare @TraceID intDeclare @maxfilesize bigintDeclare @tracefile nvarchar( the)Set @maxfilesize = - --set the maximum trace file size to 500MSet @tracefile = 'd:\tracefile\'+Convert

)*********/ -- Eg.-- Use the trace account (performancetest) to track SQL Server events.-- Create a trace Logon account (performancetest) and grant it the alter trace and view server state permissions.Use masterCreate login performancetest with Password = 'abc @ 1234 ';GoGrant alter trace to performancetest;Grant view server state to performancetest;Go-- Create a trace User Account (cetest) in the customer of the required database and grant it the showplan permission.Use customerGoCreate user p

. Net Memory leakage:Reference not eliminated, event not deleted If it is a WPF application, there are common problems with the release of Image objects. The attributes of objects bound to non-dependent attributes or that do not implement the INotifyPropertyChanged interface are not described here. This article describes how to use the powerful. Net Memory Profiler to analyze. Net application Memory leakage. The Demo is to use mdbg.exe to debug the De

Tags: logs convert weight made with int span app DivSQL Server Profiler caught a lot of code in the job, applicationname similar to Sqlagent-tsql JobStep (Job 0x94b9b5c016e8d94fb50898c868314d08:st EP 1) Such a Need to convert the binary name in the job into job_id The conversion is done in the following ways: Declare @JobID uniqueidentifier SELECT @JobID = 0x94b9b5c016e8d94fb50898c868314d08 PRINT 'My JobID is' + Convert(Char(255),@JobID) Select *

Sometimes we need to analyze our own games or other people's games, for example, we need to understand the general rendering process of an engine, this time we can use some tools, on the PC we can using the Microsoft PIX, Intel GPA, Nvidia's nsight and Perfhud to intercept a frame of data for analysis. Because of the recent move to the mobile platform, sometimes also need to analyze the game, this time we can use the tools of different graphics vendors to analyze. Here, we analyze a program usin

Problem Description:How to capture and record deadlocks, do you know how much SQL Profiler affects performance?650) this.width=650; "title=" image "style=" border-top:0px;border-right:0px;border-bottom:0px;border-left:0px; "alt = "image" src= "http://s3.51cto.com/wyfs02/M01/54/32/wKioL1R76eyhH2ThAADyU1q3jpE767.jpg" height= "border=" 0 "/ >Solution:We know that you can use the Profiler tool that comes with S

Mac OS X uses normal sleep + safe sleep by default (called sleep in Windows): saves data in memory (RAM) to files on the hard disk: /private/var/Vm/sleepimage before normal sleep. The advantage is that if the computer is completely out of power, the content in the original memory can be restored from the hard disk. Har

In win10, how do I set that the screen is always on and does not sleep ?, Win10 screen always bright and sleep Recently, when the computer is sleeping and then awake, it is always not awake. It is necessary to set the screen to always bright. How can I set the screen to always bright and not sleep? Open the computer, right-click the idle part on the desktop, a