postgres analyze

This article focuses on how to use Tcpdump and Wireshark to capture and analyze Android apps, and it's important to note that your Android device must be rooted before you grab the package, and your PC must have an Android SDK environment.Download and install TcpdumpTcpdump Link: http://www.ijiami.cn/Select a version to download and unzip to extract the UH. tcpdump file and push it to your phone:ADB push C:\tcpdump/data/local/tcpdumpFurther operations

Preface In using memory analyzer tool (MAT) to analyze memory leaks (I), I introduced the causes and consequences of memory leaks. This article describes how mat analyzes the root cause of Leakage Based on heap dump. Because the test examples may be too simple and it is easy to find out the problem, I look forward to taking this as an example.At first I had to talk about classloader. In essence, its job is to read the class files on the disk into the

In ASP. NET When optimizing websites ASP. NET That's enough. In the process of optimization, we usually first find out where the problem may exist, and then prove that the problem is to be solved. After confirmation, we will take some measures. SeriesArticleThe structure is as follows: first introduce the front-end optimization, and I will mark it after the title of the article. " Front end " In the backgroundCodeI will mark the title " Backend " If it is the optimization of the databas

points: guide the demand side to describe as accurate, detailed, and executable requirements as much as possible. Handling requirements: Analyze and sort out the obtained requirements, analyze and sort out the requirement reports from the developer's perspective, and obtain the confirmation from the requirement requestor. Key points: In the process of demand processing, it is effective to communicat

Analyze memory ing process in Linux x86-64 ModePreface In the previous article, we analyzed the virtual memory ing process of Linux in x86-32 mode, this chapter mainly continues to analyze the virtual memory ing process of Linux in x86-64 mode. The Platform discussed is x86-64, also known as AMD64, IA-32e, which is now widely used in a 64-bit architecture, can forward compatible with 16-bit and 32-bit x86.

In the previous article, we introduced how to use class-dump-z to export class information of iOS apps, how to use cylinder to hook processes, execute runtime operations, and method swizzling, use gdb to analyze the app process. However, there may be better ways to do these things. It would be great to have a tool capable of doing all these things and better displaying the information. Snoop-it is such a tool. It allows us to perform runtime analysis

IOS Performance Tuning series: use Instruments to dynamically Analyze memory leaks and tune instruments Hardware wide: The second article in the IOS Performance Tuning series, which is continuously updated. The first article introduces Analyze's static analysis of the App, which can detect memory leaks in the App. If some memory leaks cannot be solved through static analysis, it can be found through dynamic analysis, the analysis is more targeted. Thi

To analyze the largest source IP address and address, we need to execute two commands. The first command is to read the user from the log and write it into the XML file, the second command is to read the XML file and render it as a graph! Run the first command to write data to the XML file: "C: \ Program Files (x86) \ log parser 2.2 \ logparser.exe" "select top 10 extract_prefix (Remote-endpoint, 0, ':') as remotesendinghost, count (*) as hits int

A simple method to analyze the deadlock problem in LinuxDeallocks: a phenomenon in which two or more processes (threads) Wait for each other due to resource competition during execution. If there is no external force, they will not be able to proceed. It is said that the system is in a deadlock state or the system has a deadlock. These processes (threads) that are always waiting for each other are called deadlock processes (threads ). Because resource

When novice webmasters repeat the work of website O M optimization content and external links every day, does this repetitive and fixed method improve the ranking of website weights and ensure the ranking is stable, how can we analyze the results of website optimization? When novice webmasters repeat the work of website O M optimization content and external links every day, does this repetitive and fixed method improve the ranking of website weights

: 1.1.4322 Set-Cookie: ASP. NET_SessionId = rphtdr550eung2ulhucyydao; path =/ Cache-Control: private, max-age = 0 Content-Type: text/xml; charset = utf-8 Content-Length: 333 "Cp"> 0 Analyze these data packets First, HTTP is a reliable TCP protocol, so it must begin with three handshakes. The output format

This article describes how to use the showprofile command in MySQL to analyze performance. showprofiles is a common command for database performance optimization, for more information, see how to donate the show profile to the MySQL community by Jeremy Cole. This feature is disabled by default, but can be enabled at the session level. Enabling It allows MySQL to collect resources used during statement execution. Set profiling to 1 for statistical repo

Hard Canton: "iOS Performance Tuning Series", the second, continuously updated, welcome attention.The first article introduces the static analysis of analyze to the app, can find out the memory leak problem in the application, for some memory leaks can not be solved by static analysis, it could be discovered by dynamic analysis, and the analysis is more targeted.From the beginning of this article, we introduce the powerful analysis tools provided by X

, the combination of the two can be achieved to analyze the Android program memory usage.Third, how to analyzeFirst, start the program you want to analyze and make sure it is debug (that is, declare android:debuggable= "true" in the Androidmanifest.xml file).Then, use DDMS to collect the heap dump files on the Android device that you want to debug the program. This step is also very simple, in DDMS, select

MySQL uses the procedure analyze () function to optimize the table structure, procedureanalyse Introduction procedure analyse()The function is a MySQL built-in statistical analysis of MySQL Field Values to give a recommended field type. Syntax procesure analyse(max_elements,max_memory) Max_elements Specify the maximum value of a non-repeated value for each column. When this value is exceeded, MySQL does not recommend the enum type. Max_memory analyse(

Prerequisites:1, the computer installed the Java operating environment2, USB debug switch on the phone3, Get root permissions4, installing the Mat tool,: http://www.eclipse.org/mat/downloads.phpBasic steps:1, use the Eclipse-DDMS tool to analyze the memory usage of each thread, as shown inThe heap view interface is refreshed periodically, and changes in memory usage can be seen during the ongoing operation of the application.How can I tell if there is

Hard Canton: "iOS Performance Tuning Series", the second, continuously updated, welcome attention.The first article introduces the static analysis of analyze to the app, can find out the memory leak problem in the application, for some memory leaks can not be solved by static analysis, it could be discovered by dynamic analysis, and the analysis is more targeted.From the beginning of this article, we introduce the powerful analysis tools provided by X

server This kind of encounter situation friend I think more, some friends say my site has been good, why suddenly appear the situation? In fact, this also has a great relationship with the server. Especially for the site server can not open or open slow friends should be more attention. mainly included. A. Host and server configuration B. Space server security C. For servers to rent or multiple sites below a single server. The server has down the right site or is illegal site, especially by th

In our daily browsing of the web, sometimes pay attention to the site's PR, when we see the PR is higher than the site, it will feel the weight of the site is high, popular, we often put the PR high and site good or bad equals, but is this determined? How to judge the site's SEO do good and bad it? Mainly in the following areas: First, from the intuitive visual sense of the analysis. Website SEO is good or bad, can feel and judge through the user experience, can first from our visual angle to e

The site is down right directly in the site's keyword rankings drop, domain home is no longer the first, included sharp drops and so on. Site down right must be a reason, there will be reasons, to restore the weight of the site will learn to analyze the site is the crux of the right, think back to what has been done in the near future search engine things, find the reason, and then targeted improvement, so SEO optimization can be targeted. I say this,