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Where can we start with data analysis? For most friends who are familiar with the graphic work environment, spreadsheet tools are undoubtedly the first option. But the command line tool can solve the problem faster and more efficiently-and you only need to learn a little to get started. Where can we start with data analysis? For most friends who are familiar with
I. Analysis Tools 1. CPU performance analysis tools: Vmstat PS SAR Time Strace Pstree Top2 and memory performance analysis tools: Vmstat Strace Top IPCS Ipcrm CAT/proc/meminfo CAT/proc/slabinfo CAT/proc // maps3 and I/O performan
Site more than a year did not make any big changes, repeat the same thing every day: update, promotion, slowly the site has a certain weight, and finally, although the weight of the homepage came up, but did not import more traffic. Then from the Mouchangqing Teacher's blog to learn from his promotion is very focused on data analysis, from this and the letter also began to analyze my website through tools a
During application maintenance for the customer, I noticed some performance problems under high load conditions. Theoretically, increasing the load on the application will reduce the performance, but I think the performance drop rate is much higher than the load increase. At the same time, I also found that, performance can be improved by changing the logic of the application. To learn more about this, we need to perform some performance analysis. At
Analyer Tools Program Supect AnalysisFirst of all, this tool is not the eclipse comes with, so you need to download memory Analyer tools (called Mat, also can be integrated into eclipse as plug-in), I download memory Analyer tool. After installing the memory Analyer tool, proceed to the following steps:1. Click on the Load Heap button in step 5 to download the stack an
of human resources, automated testing is imperative. Here are my top 8 Java test tools and frameworks. 1. Arquillian Arquillian is a highly innovative and extensible test platform based on the JVM, allowing Java developers to easily create automated integration, functionality, and acceptance testing. Arquillian allows tests to be performed at run time. Can be used to manage the life cycle of single or multiple containers, bundling test cases, depe
Recently read the article "Speed Up your app". This is an article on the Performance analysis and optimization of Android apps. In this article, the author describes his app analysis optimization rules, the tools and methods used. I think we should learn from it. Good English readers can read the original text (link: http://blog.udinic.com/2015/09/15/speed-up-you
Analysis of Android source code (ii)--ubuntu root,git,vmware Tools, installation Input method, theme beautification, Dock, installation JDK and configuration environment Next, on the film is mainly introduced some of the installation tools of the small knowledge Point Android source Analysis (a)--vmware Workst
used to Webmaster query tool in the keyword mining, in fact, this query results and Baidu Index related search results are similar, Just eliminates the need for each to query the natural flow of the annoying lock. For example, I want to dig Taobao women's long tail keyword, then you can through Webmaster Tools Baidu Index Analysis (in fact, is the key word mining) to search, as shown: As a
. "Keyword optimization analysis" allows you to understand your choice of keyword optimization of the difficulty, the first 50 have how many home page to do this keyword, ranked in the Baidu home page site situation, let you understand the word optimization difficulty. "Dead chain detection" can detect how many dead chain site, the site does not pay attention to the dead chain, was K also do not know what happened. Disadvantages: Mainly for Baidu sea
In the previous section, we crawled nearly 70 thousand pieces of second-hand house data using crawler tools. This section pre-processes the data, that is, the so-called ETL (extract-transform-load) I. Necessity of ETL tools Data cleansing is a prerequisite for data analysis. No matter how high the algorithm is, when an error data is encountered, an exception is
Whether you are engaged in website optimization work, as long as you are a webmaster, as long as you want to introduce traffic through Google for the site, then Google Webmaster Tools for your site data analysis is absolutely referential significance. General site optimization staff of the site's data statistics will be through a number of tools for integration
Use protocol analysis tools to learn TCP/IP I. Preface At present, the speed of network development is very fast, and more people are learning the network. People with a little knowledge about the network know that the TCP/IP protocol is the basis of the network and the language of the Internet, it can be said that there is no Internet today without the TCP/IP protocol. At present, there are a lot of people
a certain number of users. JBuilder inherits the features of C ++ Builder/Delphi, which is very good in visualization and easy to use. Because of the characteristics of the Java language, they have superior performance in network development, and the object-oriented features are high, and many component technologies are supported, cross-platform features make it more and more important in the development of the present and future. However, the underlying development and multimedia development o
In the process of developing Java programs, it is unavoidable to encounter problems such as memory usage, performance bottleneck and so on. The Java Profiler Tool helps developers locate these issues quickly and efficiently, making it an important tool in the Java development process. At present, there are a variety of Java Profiler tools in the market, this article will briefly introduce several kinds of tools
: Collect user actions and use this to recommend things that you might like.Aggregation: Collects files and groups related files.Classification: Learn from existing classification documents, look for similar features in documents, and categorize them correctly for untagged documents.Frequent itemsets mining: grouping a set of items and identifying which individual items will often appear together. Hcatalog. Apache Hcatalog is a mapping table and storage Management Service for Hadoop to build dat
In linux, logs play a very important role. we can determine the status of a service based on the log recorded content, the user access status, and the log can also help us troubleshoot errors, find out the insecure factors in our system. Of course, there are many ways to manage logs. we can use shell scripts to manage logs. To implement more powerful log management functions, we have to use log analysis tools
Transferred from the "Technology Achievement Dream" blog, http://ixdba.blog.51cto.com/2895551/715742 In the previous article, I gave a brief introduction to several aspects of Linux performance and how to solve them, but how do I find out from the system that something is wrong with a certain aspect or a few aspects, which requires the use of several common performance analysis tools provided by the Linux
Author: Xuan soul Prerequisites: None This series navigation http://www.cnblogs.com/xuanhun/archive/2008/10/25/1319523.html Security Technology Zone http://space.cnblogs.com/group/group_detail.aspx? Gid = 100566 Preface The web security practice series focuses on the practical research and some programming implementation of the content of hacker exposure-web Application Security secrets and solutions (version 2. So if you fully understand this book, you can skip this article. Body From today on
To perform GC performance tuning, You have to analyze the GC log. When talking about the "human flesh" method, I always feel that the image is not good enough, so that developers or technical directors who do not know about it cannot have an intuitive understanding, this article describes several GC log analysis tools. First {Pagetracker. _ trackpageview ('/outbound/article/www-01.ibm.com ');} "Href =" http
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