Mysqlslowlog is a log tool used to record SQL statements that have been executed for a long time (beyond long_query_time seconds) to enable slow log.
There are two ways to enable: 1, in my. in cnf, log-slow-queries [= file_name] 2 is used to specify the five commonly used tools compared by the -- log-slow-queries [= file_name] option when the mysqld process is started.
Mysqldumpslow, mysqlsla, myprofi, mysql-explain-slow-log, mysqllogfilter
Mysqldumpslow is a log
of the solution of a matrix eigenvalue problem, but understand how to deduce, in order to understand the meaning of the deeper. This content requires the reader to have some basic linear algebra basis, such as eigenvalue, eigenvector concept, space projection, point multiplication and other basic knowledge. In addition to the other formulas, I try to speak more simple and clear.Lda:The full name of LDA is linear discriminant analysis (linear discrimi
From the source code version number 3.x. Reprint Please specifyCocos2d-x Total folder source code Analysis:http://blog.csdn.net/u011225840/article/details/317431291.ref,autoreleasepool. PoolmanagerRef includes a reference count called Referencecount, and when a variable of a ref class is new, its Referencecount reference count is set to 1. There are three important operations, retain. Release,autorelease, the following source code analysis is speci
Comparison and analysis of the advantages and disadvantages of mainstream PHP frameworks, and comparison and analysis of the advantages and disadvantages of frameworks. Comparison and analysis of the advantages and disadvantages of mainstream PHP frameworks. Comparison and analysis of the advantages and disadvantages o
of the solution of a matrix eigenvalue problem, but understand how to deduce, in order to understand the meaning of the deeper. This content requires the reader to have some basic linear algebra basis, such as eigenvalue, eigenvector concept, space projection, point multiplication and other basic knowledge. In addition to the other formulas, I try to speak more simple and clear.Lda:The full name of LDA is linear discriminant analysis (linear discrimi
Catalina is called by reflection, such as:650) this.width=650; "src=" Http://image.mamicode.com/info/201412/20180926205526860460.png "style=" margin:0px; padding:0px;border:0px;width:709px; "/>Then start the server by invoking the Start method of the Standardserver object in the Catalina, and in the Start method, as we analyzed in the section of the Tomcat source analysis-component initiation implementation analy
Brief analysis of thinkphp cache (F method) and dynamic cache (S method) (daily finishing), analysis of thinkphp
The system is cached by default, and we can define other caching methods in the project configuration file, for example, modify the default cache mode to XCache (of course, your environment needs to support XCache)
For cache directories under file-mode caching, where there is a large number of f
Laravel Route setting and sub-route setting example analysis, laravel instance analysis
This paper describes the Laravel routing and sub-route setting methods. Share to everyone for your reference, as follows:
Normal routing settings
1. Routing (routes.php) code:
Route::get (' min ', ' mincontroller@index ');
Min: For the route name, which is entered in the URL, such as 127.0.0.1/min here min is the corres
Enable slow LogThere are two ways to enable: 1, in MY.CNF through Log-slow-queries[=file_name] 2, when mysqld process starts, specify the--log-slow-queries[=file_name] option
Five common tools for comparisonMysqldumpslow, Mysqlsla, Myprofi, Mysql-explain-slow-log, Mysqllogfilter
Mysqldumpslow, MySQL official provides the slow query log analysis tool. The output chart is as follows: The main function is to count the number of occurrences of different
PHP value Assignment and address assignment Usage example analysis, assignment instance analysis
In this paper, we describe the usage of PHP value Assignment and transfer address assignment. Share to everyone for your reference. Specific as follows:
I hope this article is helpful to everyone's PHP programming.
http://www.bkjia.com/PHPjc/1019435.html www.bkjia.com true http://www.bkjia.com/PHPjc/1019435.h
Brief analysis of iis7.5 installation configuration PHP environment, analysis of iis7.5 installation configuration
iis7.5 is installed in the Win7, win8 in the Web server, Win2003, Win2000 Web server using iis6.0, because Win7, win8 system compared to Win2003, Win2000 with the change of the new leather surface of the difference, Therefore, the configuration of the iis7.5 must also be familiar with a double
PHP Abstract Class Usage example analysis, PHP abstract instance Analysis
The examples in this article describe the PHP abstract class usage. Share to everyone for your reference. Specific as follows:
I hope this article is helpful to everyone's PHP programming.
http://www.bkjia.com/PHPjc/1028300.html www.bkjia.com true http://www.bkjia.com/PHPjc/1028300.html techarticle PHP Abstract Class Usage example
Example analysis of smarty variable modification usages in PHP, smarty instance Analysis
This example describes the use of smarty variable modifiers in PHP. Share to everyone for your reference. The implementation method is as follows:
test.php Code:
Test1.html Template code:
Smarty Test Total is {$total} Formatted Total is {$formatted _total}
Compiled test.html.php code:
Smarty
PHP Multi-thread internal multi-threaded instance analysis, PHP multithreaded instance analysis
In this paper, we analyze the multi-thread usage within PHP. Share to everyone for your reference. Specific as follows:
Copy CodeThe code is as follows: Class Http_multirequest{List of URLs to crawl in parallelPrivate $urls = Array ();Options for CurlPrivate $options;constructor functionfunction __construct ($op
Comparative analysis of the pros and cons of mainstream PHP frameworks, comparative analysis of framework advantages and disadvantages
PHP is a popular open source server-side scripting development language both at home and abroad. Able to adapt to the development needs of large and medium-sized projects. In this article we will introduce several mainstream PHP framework and its related advantages and disa
of the solution of a matrix eigenvalue problem, but understand how to deduce, in order to understand the meaning of the deeper. This content requires the reader to have some basic linear algebra basis, such as eigenvalue, eigenvector concept, space projection, point multiplication and other basic knowledge. In addition to the other formulas, I try to speak more simple and clear.Lda:The full name of LDA is linear discriminant analysis (linear discrimi
After the above socke is created, we will naturally think of the following work, that is, bind.
5.6 bind Analysis of l2cap
According to international practice, after the socket is built, bind is bound, haha ~~
if (l2cap_bind(sock, opts->src, server ? opts->psm : 0, opts->cid, err)
This function is as follows:
Static int l2cap_bind (int sock, const bdaddr_t * src, uint16_t psm, uint16_t cid, G
Spring's AOP implementation principle, brewing some days, before writing blog confidence is not very sufficient, so re-read one side of the implementation of AOP core code, but also from the Internet to find some examples of spring AOP analysis, but found that vinegar buy dog meat too much, the title tall, Most of the content is relatively superficial some of the introduction, may also be due to the relatively few people read this part of the core cod
Spring Source Code Analysis-interface and abstract class analysis for Resource AccessStarting from today, we have taken a step-by-step approach to source code analysis. At the beginning, you must start with something simple. Let's start with Spring, and its Resource abstract interface Resource, the most powerful framework in the development history of Java. I hav
Spring Source Code Analysis-interface and abstract class analysis for Resource access, springresource
Starting from today, we have taken a step-by-step approach to source code analysis. At the beginning, you must start with something simple. Let's start with Spring, and its Resource abstract interface Resource, the most powerful framework in the development histo
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