web application performance testing using jmeter

of the network on the way to upload is roughly divided into two categories, such as the use of compiled components (DLL file) to upload, to use the Upload method must be installed on the server upload components or register components on the server to use; one is to upload using an precompiled code class, You do not need to register on the server to use it. These two types of components have more than 10 kinds, such as Aspsmartupload,aspupload,sa fil

above access URL operation exceptPycurl.error:Print "URL%s"%URL http_document_size=c.getinfo (c.size_download)#http_download_speed = Round ((C.getinfo (Pycurl. Speed_download)/1024), 2)Http_download_speed = Round ((C.getinfo (Pycurl. Speed_download)), 2) Http_total_time= Round ((C.getinfo (Pycurl. Total_time) * 1000), 2) Http_response_code=C.getinfo (Pycurl. Http_code) Logging.info (hostname+' '+key[0] +'['+ K +']'+' '+str (http_document_size)) Logging.info (hostname+' '+KEY[1] +'['+ K +

Web applications basically enter a site in the browser's address bar, then enter, and finally the browser displays what you want.This is what the user can experience. What do we see as programmers?The main process for an HTTP request is:1, the DNS server resolves the domain name (the address of the browser address bar) to obtain the corresponding IP address, port number, service name.2, the client according to the resolved address to the service AH se

Beginner 1, JS CSS library file through CDN referral recommended HTTP://WWW.BOOTCDN.CN/2, picture compression batch image compression recommended caesium_boxed, compressed picture volume can be reduced by about 50%, while not affecting the picture display accuracy, save bandwidth 3, The head reference CSS, the bottom reference js4, compression js CSS reduce the bandwidth occupied 5, multi-image page using pictures lazy loading.JQUERY.LAZYLOAD.JS6, opt

with blocking notifications. In this model, non-blocking I/O is configured, and then blockselectA system call is used to determine when an I/O descriptor is operated. EnableselectThe call is very interesting because it can be used to provide notifications for multiple descriptors, not just for one descriptor. For each prompt, we can request that this descriptor can write data, read data is available, and whether an error occurs. Figure 4. Typical process of asynchronous blocking I/O model (sele

-blocking I/O with blocking notifications. In this model, non-blocking I/O is configured, and then blockselectA system call is used to determine when an I/O descriptor is operated. EnableselectThe call is very interesting because it can be used to provide notifications for multiple descriptors, not just for one descriptor. For each prompt, we can request that this descriptor can write data, read data is available, and whether an error occurs. Figure 4. Typical process of asynchronous blocking I/

|action)? ${# $server _port can not, only Nginx port is valid Proxy_set_header Host $host: $server _port;proxy_set_header x-real-ip $remote _addr;proxy_set_header x-forwarded-for $remote _addr;proxy_pass http://tc;} Location ~. *\. (gif|jpg|png|htm|html|css|flv|ico|swf) {proxy_pass http://tc;proxy_redirect off;proxy_cache_key $host $uri$is_args$args;proxy_set_header host $host;p Roxy_ Cache Nginx load Balancing Load balancing strategy is more, here are mainly used three kinds: ip_hash:ip

or service online. Metrics sampling should minimize the intrusion of the original system, so it is generally best to store the sampled results in a message queue or in memory db, and then perform a dynamic display, in addition to the sampling frequency is an important factor to consider. Because for a larger system, the amount of data generated by real-time sampling is larger. InfluxDB seems to be available only on non-Windows platforms, so this article does not fully demonstrate the constructi

The distance between the user and the Web server can also affect the response time. From a user's perspective, deploying content to multiple, geographically dispersed servers can also help speed up the loading of web pages. But where should we start? The first step in geographically distracting content is not to redesign the Web

tool (Web Performance Analyzer) that shows the size of the traditional and Ajax two different versions of page transfer data. You can see URLs (links) and sizes from the image below, and AJAX-mode programs do make the home page bigger. In our test, about 3 K is larger. This is not surprising, because this page contains additional JavaScript programs to drive AJAX patterns. If you choose an AJAX frame struc

Introduction: Use the Apache Web server as an example to learn how to analyze the performance implications of a public configuration. Use application tracking to observe system calls made during the application's run. By counting the number of calls and the time that occurs, you can easily understand the impact of performance