- Stress Test Online
- Throng 1 11 – Stress Test Your Web Server Settings
- Throng 1 11 – Stress Test Your Web Server Unavailable
Infoclick 1 2 5 bath house. Why stress test a web server?
Stress tests over your web server are useful to help you to understand how your server reacts to an high volume of concurrent users! This is needed if you think that your web application will be used from many users at the same time.
Stress tests over your web server are useful to help you to understand how your server reacts to an high volume of concurrent users! This is needed if you think that your web application will be used from many users at the same time.
The tool automatically collects metrics to help you determine whether your queries will perform under load, and what kind of resource strain they put on a server. In short, it also allows putting a serious load on your database. Use of OStress utilities. Stress: Most applications have application response time targets. The typical test run is 1 to 1000 users, with a 1000ms timeout. This will put enough load on your server/website to show you how many concurrent users you can handle, before users start to randomly time out. Based on the end results, Blitz will suggest action steps to consider in order to improve the performance of your website. Free performance, load, and stress test for web servers. Webserver Stress Tool is a powerful HTTP-client/server test application designed to pinpoint critical performance issues in your web site or web server that may prevent optimal experience for your site's visitors.
Let’s see how to stress test your web server with OpenWebSpider#
OpenWebSpider is a crawler (a web robot) born to download, parse and index pages into a MySql Server and make them searchable with a search engine.
OpenWebSpider is a crawler (a web robot) born to download, parse and index pages into a MySql Server and make them searchable with a search engine.
OpenWebSpider# v0.1 and later versions have a new command line argument: −−stress−test
You can use this new feature to stress your server!
It simply downloads an URL many times with many concurrent threads and exits.
You can use this new feature to stress your server!
It simply downloads an URL many times with many concurrent threads and exits.
An example (better than 1000 words):
OpenWebSpiderCS.exe −−index www.URL.com −−stress-test 200 -t 50
Explanation: OpenWebSpider downloads www.URL.com 200 times using 50 concurrent threads!
Using −−stress−test with latest version of OpenWebSpider# (starting from v0.1.2) doesn’t require a connection to a MySql Server or a well-configured configuration file so you can download OpenWebSpider# and start performing stress tests over your server without the need of configuring it or setting it up!
Just download and use!
Just download and use!
The purpose of web server stress testing is to find the target application’s crash point.
The crash point is not always an error message or access violation. It can be a perceptible slowdown in the request processing.
Stress testing can give answers to the following typical questions:
- What load can crash the server application?
- What parameters do we monitor to make sure that the server remains available?
- How do I fail over my web servers and databases?
Creating a Web Server Stress Test
- Record one or more user scenarios.
- (Optional) Modify the recorded traffic.
- Create a load test that will simulate several virtual users.
- Assigns scenarios to the users (you can assign the same scenario to several users orassign an individual scenario to each user).
- Configure the created test:
- Specify the browser, connection speed and start delay for each user.
- Specify the workstation for each user.
- (Optional). Specify service level agreement (SLA) criteria to estimate the performance of the tested web application.
- Run the test.
- Analyze the load test results and check whether the application “crashes”.If the test results contain warnings and errors, this may mean that you have found the crash point.Once again, a crash is not always an error, this may be unacceptable performance.
- If the application did not crash, increase the number of virtual users and perform the test again.
Analyzing Results
During the test run, you can monitor the server parameters on the Runtime > Graphs page in real time. The parameters of primary interest in stress tests are as follows:
- Virtual users
- Passed requests
- Response transfer speed
- Errors
- Warnings
When the server crashes, you may find this out by response transfer speed decrease, or the number of passed requests. In addition, the server may report errors.
As you can see in the image above, the simulation fails when trying to simulate 300 virtual users.
Let's suppose that your application works fine with 10 virtual users, but crashes when working with 300 virtual users. This means that the application crashes at a point between 10 virtual users and 300 virtual users. To get closer to that point, split the user interval into two parts: 10…145 and 145…300, and run the test with 145 virtual users.
If the test with 145 virtual users was not successful, you can then cut the first interval in half and run the test using 77 or 78 virtual users.
If the test with 145 users passes, cut the second interval in half and run the test using 222 or 223 virtual users.
Continue splitting the interval until you find the crash point.
Click the image to enlarge it.
Here, we can see that the crash point for the given application occurs at simulation of 220 virtual users.
Reviewing detailed results for the crash point run may clue you up on the server’s instability.
Stress Test Online
See Also
Throng 1 11 – Stress Test Your Web Server Settings
![Test Test](https://ars.els-cdn.com/content/image/1-s2.0-S0167739X14000430-gr8b.jpg)
Throng 1 11 – Stress Test Your Web Server Unavailable
Typical Use Cases
Load Testing - Basic Concepts
About Test Results
Creating and Configuring Load Tests
Load Testing - Basic Concepts
About Test Results
Creating and Configuring Load Tests