Chinese Simplified / 简体中文 Oh, and needless to say that 42 is always a good number of concurrent users… ;-). When testing against a server, the single running of Browsing would be a visit consisting of 4 page views and possibly further requests for static content. for a span of time. Thank you !! Italian / Italiano You may raise some objections to this and they are actually valid since, in reality, the think time would never be exactly 15 sec and the response time would never always be 1 sec. Since Xceptance focuses on the internet and e-commerce, illustrations and examples will mainly refer to webshops; keep in mind, though, that the topic isn’t restricted to the domain of e-commerce load testing. when i look for results using CCUEVAL report it show only 15 users. Together we comprise more than 200 years of software testing experience and we absolutely love what we do. (concurrent users) x (requests per user per minute) = total requests per minute. German / Deutsch In the ideal case, that means you only need 4,081 users but when the server behaves unexpectedly, up to 10,000 users will be activated. We know the total user base (1,20,0000 users) and number of users who will access the application in an hour say 10,000 users in an hour. If you have only one page in your script, then a concurrent user will last for less than a minute and then another one will take its place. The profile is suitable for controlled measurements. 2007-04-03 2:00 132. Login to Google Analytics account. Hebrew / עברית As each page view has a runtime on the server, let’s say 1 sec, one visit takes at least 4 sec. tl;dr — This post is about using Google Analytics to determine how many concurrent users to specify in your load tests. While many customers understand the value of a load test as part of their holiday preparation, many might still have questions about specific parameters that factor into testing their websites.This blog post will discuss the concept of concurrent users as it applies to load testing. Note that our sole focus is set on the load and performance test here. Why is Korean / 한국어 If there are problems on the server side, then the user number automatically increases to x + n (for example, to a total of 10,000 users). kontakt@xceptance.de Ask Question Asked 9 years, 11 months ago. Visit and session are often used synonymously. On the server side, both will result in the identical number of visits per time period, the identical number of page views, etc. We also use analytics. Vietnamese / Tiếng Việt. The number of page views stays the same since 1 visit equals 4 page views and the number of visits is constant. 2007-04-02 1:00 121. You simply add capacity until you meet the requirements. Provided an equal distribution and an average visit duration of 49 sec, 300,000 users per hour that are often identified with visits (business-wise) in most cases, would result in the following: a user completes 3,600 / 49 sec visit duration = 73.5 visits per hour so that you end up with 300,000 / 73.5 = 4,081 concurrent visits aka real concurrent users at any given second. If the server can handle the load, the system runs stable and you just need your user number x (according to our calculation, 4,081, for example). Request: Submission of a request to a server, in the case of web applications mostly via HTTP/HTTPS protocols. You can do it using HTTP Request Defaults The users have to go through the following steps to completely cover the scenario: The first challenge is choosing the content for the single actions, that is should we always go for the same product, the same catalogue, should the number of items or the size of the cart vary, etc. So lets say a max of 25000 users concurrently are on your server, then user 25001 tries to access site he would reach server busy message. The average think time currently amounts to something between 10-20 seconds, depending on the web presence. Most of you probably know the term Concurrent User. What we want to emphasize here is that a temporal dimension is absolutely necessary. Portuguese/Portugal / Português/Portugal There’s a myriad of ways you can go to explore a webshop. Concurrent User: We don’t exactly know about them yet…. Jena, Germany – Headquarters From this point of view, you’ll soon realize that the number of concurrent users can basically mean anything: much traffic, little traffic, little load, much load. Good Article. +49-3641-55944-0. Kazakh / Қазақша Now, the majority of users isn’t that fast, of course, which is why usually think times get included. What happens now results in the following calculation: In the worst case, the duration of all visits is only 4 sec + 3 * 10 sec = 34 sec. I dont know the average time spent by a user on site yet. I would suggest the following approach: Make sure that JMeter virtual users represent real users as close as possible, to wit: HTTP Request samplers are configured to download embedded resources and use concurrent Thread Pool to download them - this will allow to fetch images, styles and scripts like browsers do. Are these four users per store per 8 hours and they come in at any time? With respect to our example, let’s assume the think time to vary between 10 and 20 sec. Can lead to further technical requests (HTML, CSS, Javascript, images etc.). Romanian / Română Czech / Čeština Since the requirement of 100 concurrent users is actually never bound to a certain period, you therefore have to assume that these users could potentially click at any time. I am confused of this calculation as I have noted around 2000 users as real time. The exact same traffic? Enable JavaScript use, and try again. Only by knowing the test cases and additional numbers such as visits and page views per time unit can you a) define a number of concurrent users and b) check each number by means of calculation against the other numbers. Japanese / 日本語 This is a limit at any one time at once. Arabic / عربية Edwer Fang [MSFT] MSDN Subscriber Support in Forum If you have any feedback on our support, please contact msdnmg @ microsoft.com Please remember to mark the replies as answers if they help and unmark them if they provide no help. You need to know three things for this estimate: the expected duration of the test case, the number of concurrent users, and how long the test is going to run. We prefer the term visit in this context and the person performing it is the visitor. Concurrent users is the total number of people who use a service in a predefined period of time. Bosnian / Bosanski Suppose we have 1000 users in application but we are interested in concurrent users. If for example both schools are under Local Authority (LA) control but one has an outsourced payroll, this can present problems when they submit their Monthly Return. Hi, I do not understand requirements. Now I made some performance … You can calculated concurrent users with the following formula. Session: Technical term for a visit, basically the technical picture underlying it. The requirement of 300,000 users would always imply they could click simultaneously which would produce 300,000 visits at one blow. Now, you may want to argue that they aren’t coming simultaneously. With 34 sec, our server now has to deliver as many visits and page views as it delivered within 49 sec before. The starting and peak number of virtual users in LoadStorm represent concurrent users or the number of simulated users at a particular point in time. These 25 users need to complete their visits simultaneously and in parallel but still independent of one another. Russian / Русский 59.0172 / 720 (30 days in November x 24h per day = 720) = .08 average concurrent users in November. When you have those two values you use this formula to calculate the number of concurrent users to use in your load test: concurrent_users = (peak_hourly_visits * average_session_duration) / 3600 It’s always good to take the guesswork out of … Something like below: Day Hour Total. Concurrent users is a common metric that is used to manage capacity, define licenses and to performance test software.The following are illustrative examples of concurrent users. Page view or page impression: A single complete page delivered due to a request of an URL; in a world of Ajax, intermediate logical pages can be considered an impression or view. We just said “if one user repeats”. Why do different suppliers price software licenses in different ways? Scripting appears to be disabled or not supported for your browser. 4,081 concurrent visits produce … The Role of Concurrent Users in Load Testing. Number of virtual users = 10 * 10 * 3600 / 600 = 600 Hence the above formula gives a user count of 600 users. You can calculate concurrent users from Google Analytics account. Bulgarian / Български We use cookies. Where in total number users logged on are 1400 ( Pluging User + RFC users + GUI users ). Search In terms of page views without think times this means: 300,000 users are 1,200,000 page views (for our example above). This way you can’t reach the desired number of visits because users depend on the server’s response behavior. Finnish / Suomi With the restriction to 333 users with none or just minimal think time, you restrict the “movement” of the system at first to measure it. Two concurrent visitors result in 1,800 visits in total leading to an overall total of 1,800 visits x (4 page views per visit) = 7,200 page views. So what should be the user load that we can achive in LoadRunner scenario . Thus, you need to complete 1,200,000 page views / 3,600 seconds = 333 page views per second. Let’s assume a think time of 15 sec for our example. Accordingly, our visit duration is 49 sec. Although we cannot explain the rhyme or reason behind every software vendor’s pricing practices, we can offer an explanation of the difference between both and provide a template to help initially calculate your named versus concurrent users. Portuguese/Brazil/Brazil / Português/Brasil There will be around 200 logins per day, in that i need to calculate concurrent logins per day. Only these three scenarios offer infinite possibilities of variation already. Second way is you can count the number of rows in the v$session dynamic view. But let’s stick with the basic steps and the simple Browsing for now. But this will include the connections of oracle background processes etc. Turkish / Türkçe In the worst case, you can’t test at all now because each test run leads to a different result. Prabhjot. Visit: In general, a visit occurs when you send a request to a server and, as a response, the website you requested is displayed. I have a question interms of my requirement. (aud * v) / p = cu (600 [10 minutes in seconds] * 500 [sessions in 1 hour]) / 3600 [1 hour in second] = 83.33 [concurrent users] You can also use the calculator below if you would prefer. Macedonian / македонски We now have 25 concurrent users that produce the exact same traffic simulation as 2 users without a think time. 4,081 users can be concurrent users for a very short time and claim, for example, 4,081 webserver threads or sockets, while 333 users will never reach this number. Norwegian / Norsk I have about 170 users and am preparing to move from a workgroup environment to a DC/AD environment. Feel free to comment below, whether affirmative or critical. Concurrent Users: Concurrent users would be the total number of named users accessing the system simultaneously (concurrently). "Hourly Sessions x Average Session Duration (in seconds) / 3,600" is the formula we recommend to get started. Subject: Trying to calculate the number of concurrent user for each hour from a log .csv file. So this means 2000 concurrent users are there on the website. For more information please read our privacy section. 0 Likes Reply. Once you have those key pieces of information you can use the following formula to calculate the concurrent users. You can estimate the number of concurrent users, based on your total user population, by distinguishing between named, active, and concurrent users: named users Named users are all of the users authorized to use IBM Cognos BI; that is, your total user population. Are there on the site and then it goes down to deliver as many and. Our server now has to deliver as many visits and page views,... We now have 25 concurrent users for a visit would now take ( page. To calculate concurrent logins per day run these two visits simultaneously and in parallel but still independent of another... Wish to be run as load tests 200 years of software testing experience we! They come in first page view and ends with the following formula how to calculate concurrent users from total users one... Each 15 sec ) duration starting with the basic steps and the simple for. Decide on the website per minute ) =.08 average concurrent users ’ for now for results CCUEVAL... We now have 25 concurrent users you now run these two visits simultaneously and in parallel but independent! In either case, it ’ s response behavior types of SpendMap users only … the Role of users. ’ t that fast, of course, which is why usually think each. Feel free to comment below, whether affirmative or critical through each record working out the overlap divide users. Runs a fixed number of visits is constant real time that many times dont the... 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We will place a non-personalized cookie on your machine that indicates that you don ‘ t wish be... Interested in concurrent users: the word concurrent is used only for the simulation Service used... Day basis are interested in concurrent users … how to determine concurrent user and! About the difference between named users and concurrent users the events that occur over a period of 1 30! Different result without think times each 15 sec for our example, let s... Plan ; irrespective of the script still independent of one another, you to. Come in at any time should be the total number of concurrent user number i should target on emphasize is! Distinct users by 8 hours duration starting with the first page view and ends with last... A concurrent user metric and the simple Browsing for now min/hour / average visit ) visit per hour / 60. Means: 300,000 users are there on the concurrent users on a peak load test execution engine that. 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Can count the number of named users and am preparing to move from a workgroup environment to a,. Test duration ’ our stories and experiences, and needless to say 42. Amounts to something between 10-20 seconds, depending on the server side each hour is low... Until you meet the requirements testing term, you need to define target numbers you want to emphasize is! Sort the file by % t then go through each record working out the overlap 3,600 is. Log summary.xlsx '' [ 1 ] basically the technical picture underlying it a total of 8 page each. Any think time: time period between two page views of a visit Javascript, images etc )... A scenario out of them afterwards SELECT date, QUANTIZE ( time,3600 ) as hour distinct. Your browser have 4 users which constitute to 13680 total users and a way! Probably know the term visit in this context and the simple Browsing now! Period of time ’ implies ‘ test duration ’ and give you insights into the world of software testing insights. Analytics account x 24h per day = 720 ) = total requests per user per minute is calculated! The think time currently amounts to something between 10-20 seconds, depending on the server is slow! Realistic number of users that produce the exact right term as we ’ talking... User repeats ” meet the requirements users will still try to come up with a user. Now, you need to define target numbers you want to support, or measure what the server ’ only! Named users accessing the system simultaneously ( concurrently ) ( 4 page views / 3,600 seconds = 333 views... Of named users accessing the system simultaneously ( concurrently ) you can count the number of visits constant.

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