top data analysis tools

Common performance analysis tools. 1. vmstat commandVmstat is short for Virtual Meomory Statistics (Virtual Memory Statistics). This command tool is installed by default in many linux releases, the vmstat command can be used to monitor the memory information, Process status, and CPU activity of the operating system. The disadvantage is that a process cannot be deeply analyzed.The vmstat syntax is as follows

http://www.cnblogs.com/fo0ol/p/3297054.htmldo web development, it is inevitable to develop their own page performance testing, self-written tool detection, too much work. Online there are several more mature testing tools, the following to introduce, and share with you. Based on web analytics tools:1. Ali Test2. Baidu Application Performance Testing Center2. Web Pagetest3. PingDom Tools4. GtmetrixBrowser-ba

think the timetaken should be given priority because its value directly reflects the user's wait time (excluding the front-end rendering time).If the timetaken is too large, it is necessary to check whether the scbytes,csbytes is too large,If the latter is too large, then the direction of optimization is to reduce the amount of data transfer, otherwise the program processing takes up a lot of time, should consider optimizing program code.Finding goal

Network Packet analyzer is a network analysis program that helps network administrators capture and interactively browse data packets transmitted over the network and analyze data packet information. Five Best Network Packet Analysis tools are provided, as shown below: 1. Wi

corresponds to the test of the target file, which is not underlined, and its symbol type is R. Generally, it is located in Rodata section. It is worth noting that if const char *test = "ABC" is defined in a function, const char Test_int = 3. No symbolic information is obtained using NM, but the string "ABC" is assigned to read-only memory, and test is in the Rodata section with a size of 4.S : The symbol is in a non-initialized data segment for small

Below is a list of some tools that can help you examine your Java source code for potential problems: 1. pMD from http://pmd.sourceforge.net/ License: PMD is licensed under a "BSD-style" License PMD scans Java source code and looks for potential problems like: * Possible bugs-Empty try/catch/finally/switch statements* Dead Code-unused local variables, parameters and private methods* Suboptimal code-Wasteful string/stringbuffer usage* Overcompl

If you divide web traffic from top to bottom into layers of--xmlhttprequest, HTTP layer, TCP layer, these tools can be used to analyze the communication data of each layer separately, which is very powerful in combination. 2008/12/31: In addition, you can refer to Daniel Classmate's Web development tools commonly used in the article, I believe it will greatly he

Linux performance analysis tool nmon1. Overview monitoring is an indispensable part in checking system problems or optimizing system performance. The operating system monitoring tool monitors the usage of operating system resources and indirectly reflects the running status of each server program. According to the running results, we provide the linux performance analysis tool nmon 1. Overview monitoring, w

Snifferview is a small, powerful network analysis tool that can effectively help you view and analyze network data and troubleshoot network problems, which are characterized as follows:1. Small size, around 200k, only one file, running and data analysis speed.2. Supports the packet filter statements similar to the famo

) {type= Type | | "FX"; varQueue =jquery.queue (Elem, type), Startlength=queue.length, FN= Queue.shift (),//Take out the first function in a queueHooks =jquery._queuehooks (Elem, type), Next=function() {Jquery.dequeue (elem, type); }; //always remove progress points if the FX queue is queued if(fn = = = "InProgress")) {fn=Queue.shift (); Startlength--; } hooks.cur=fn; if(FN) {//add a progress point to prevent the FX queue from automatically dequeue if(Type = = = "FX") {Queue.unshift

Linux performance analysis tool nmon 1. Overview monitoring is an indispensable part in checking system problems or optimizing system performance. The operating system monitoring tool monitors the usage of operating system resources and indirectly reflects the running status of each server program. The analysis based on the running results can help us quickly locate the scope of system problems or performan