play the engine.Web-inspector inside the Cpu-profilor module can be very good evaluation of a JS function more than 10 years of the total project ratio, so you can stare at the top of the function to optimize. However, the native Web-inspector only gives the JS function's execution occupancy ratio, and does not list whether the function has been optimized, and if not, what the reason is.After reading the JS engine V8 code, we present these very critical/useful information to the code farmer thr
IOS Performance Tuning series: Use Time Profiler to discover performance bottlenecks and tune profiler
Hardware wide: The fifth article in the IOS Performance Tuning series, which is expected to be updated continuously over 20 articles.
The last four articles focus on memory and Analyze memory leakage, zombie objects, and memory allocation. This article introduces the use of Time
to open the selected node in a new instance.
Using CPU Profiler
Memory monitors help minimize the use of objects. CPU Monitor will help you understand the time that the object is being used. CPU monitor can be viewed as a recording device in the Java Virtual machine. The following steps describe how to give the response time and CPU usage of the tested program.
1, click the CPU Monitor
each plan depends on the statistical results collected by the system, but these data are not necessarily the latest. Because you may know more about the database and data content than query optimizer, you can decide a better plan than query optimizer. Using the information provided by query analyzer, you can determine whether the plan provided by query optimizer to the declarative plan is efficient. If you are sure it is not good enough, try modifying the T-SQL statement or using the SQL prompt
First, prefaceIn recent times, there have been two problems with websites:1. Memory usage increases slightly until the server memory fills up.2. When you visit a page, the page responds too slowly and the CPU stays high.An initial estimate of memory growth may be due to the fact that there are unsaved resources that are taking up memory, and that the CPU is high probably because of the time-consuming operations performed.Here we use the Ants Performance Prof
Http://drupal.org/node/201916
Http://drupal.org/node/206792
Http://www.newhua.com/2012/1205/187066_4.shtml
Original http://www.2cto.com/kf/201204/126311.html
Http://www.cnblogs.com/Miser/archive/2012/04/04/2432505.html
I have recently read high-performance JavaScript at http://book.douban.com/subject/5362856/, and compiled a series Article Consolidate the knowledge points. Although the too
This article will introduce several major steps for SQL Server Profiler to analyze deadlocks. This is also to help you better manage your databases.
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 ), at the same time, process1 requests one exclusive lock (X) for table2, process2 holds one exclusiv
Hello! I am Sameer chabungbam, one of the program managers on the JScript team.
The recently released beta 2 of Internet Explorer 8 contains a lot of improvements which are aimed at making developing Web applications on Internet Explorer 8 easier and more productive. one of these improvements is the JScript profiler in developer tools, which provides critical JScript related performance data to a web developer that helps identify and fix performance r
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
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/
Go from the Unity canon:Http://game.ceeger.com/Manual/ProfilerWindow.htmlHttp://game.ceeger.com/Manual/Profiler.htmlProfiler Window Profiler windowdate:2013-07-01 13:44Attaching to unity players attached to unity playerTo profiles your game running on an other device or a player running on another computer, it's possible to connect the EDI Tor to the other player. The dropdown Active Profiler would show all
I. Description
Oracle provides a profiler toolkit that allows you to view the performance of each module during PL/SQL Execution. You can download this script from MOS:
Implementing andusing the PL/SQL profiler [ID 243755.1]
You can also download it from my csdn:
Http://download.csdn.net/detail/tianlesoftware/4051100
When there is asignificant gap between user elapsed time and SQL processing elapsed time,
Label:Original: SQL Server Profiler ToolI. Introduction to SQL Profiler ToolsSQL Profiler is a graphical interface and a set of system stored procedures that function as follows:
Graphical monitoring of SQL Server queries;
Collect query information in the background;
Analyze performance;
Diagnosing a problem like a deadlock;
Debug T-SQL
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
I. Introduction to SQL Profiler ToolsSQL Profiler is a graphical interface and a set of system stored procedures that function as follows:
Graphical monitoring of SQL Server queries;
Collect query information in the background;
Analyze performance;
Diagnosing a problem like a deadlock;
Debug T-SQL statements;
Simulated replay of SQL Server activity;
You can also use SQL
SQL Profiler is a graphical interface and a set of system stored procedures that function as follows:
Graphical monitoring of SQL Server queries;
Collect query information in the background;
Analyze performance;
Diagnosing a problem like a deadlock;
Debug T-SQL statements;
Simulated replay of SQL Server activity;
You can also use SQL Profiler to capture activities that are
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
Using PL/SQL profiler to locate PL/SQL bottleneck code for SQL optimization, you can use SQL tuning advisor to achieve automatic SQL optimization and adjustment. For PL/SQL code, there are both SQL code and PL/SQL code. It is far from enough to use only 10046 events, because the SQL time may be very short, the entire package or process is executed for a long time, and other packages, processes, and functions are nested in the package or process. It se
There is a kind of speed called Turtle line, there is a kind of feeling called unbearable, there is a kind of desire called performance improvement, there is a kind of difficulty called the bottleneck.
Everyone wants their programs to run quickly, but how hard it is to improve performance is, even getting started. Which of the following is the key to performance improvement? Which segment is the bottleneck of the program running? Do you have to add a period of output before and after each funct
). SPID 55 to wait.There is a process blocking, which can result in a deadlock.4.SQL Server checks that the two processes (the first second session) are deadlocked and terminates (kill) on the victim list for a process that consumes less resources. By displaying the left and right elliptical process nodes, you can see that the least used log is the process node on the left.5. SPID 54 (the first session) is rolled back (Rollback), and SPID 55 (the sec
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