For example, if you run a load test with 10,000 virtual users, each making a request every 20 seconds (3 requests per minute), then you're making 30,000 requests … With respect to our example, let’s assume the think time to vary between 10 and 20 sec. Vietnamese / Tiếng Việt. If the system delivers what it should, the test may expand in its width aka both the think times and the number of concurrent users go up. Russian / Русский We use cookies. Hello All, I am running a report CCUINIT to check for concurrent users on a day basis. With respect to our simulation period of 1 hour, we get a new session (begin of a visit) every two seconds on the server side – 3,600 sec / 1,800 visits as our visits are equally distributed. Let’s assume three scenarios: a visitor that is just looking (Browsing), a visitor that puts products into the cart (Add2Cart), and a visitor that checks out as a guest and wants their ordered items to be shipped to an address (Order). Of course, it can make sense to test 4,081 users instead of 333 although there’s the same number of visits and page views per time period on the server side. 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. May be after 1 or 2 hour these users will be there on the site and then it goes down. Request: Submission of a request to a server, in the case of web applications mostly via HTTP/HTTPS protocols. Number of virtual users = 10 * 10 * 3600 / 600 = 600 Hence the above formula gives a user count of 600 users. Portuguese/Brazil/Brazil / Português/Brasil So what should be the user load that we can achive in LoadRunner scenario . Note that our sole focus is set on the load and performance test here. Greek / Ελληνικά I don't have any idea that which is best way to calculate concurrent logins per day (i.e claculating hourly concurrent logins per day and then averaging or calculating Max no of concurrent logins in any hour.) All tests that are normally run at first, which is absolutely correct, are tests that want to identify or verify the good case. It’s only 3 think times because there’s none after the last click that terminates the visit. Thus, you need to complete 1,200,000 page views / 3,600 seconds = 333 page views per second. Bulgarian / Български 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. There’s a myriad of ways you can go to explore a webshop. Slovak / Slovenčina In the worst case (note that 1 page view takes 1 sec on the server side), however, this would amount to 100 * 3,600 sec = 36,000 page views per hour. Login to Google Analytics account. Visit and session are often used synonymously. Jena, Germany – Headquarters Let’s start with a couple of key terms to help you understand what we’re talking about: A load test wants to reflect present load conditions or anticipated load conditions. 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. 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. 2007-04-02 1:00 121. Good Article. Scripting appears to be disabled or not supported for your browser. 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. Catalan / Català Danish / Dansk Representation of test cases meant to be run as load tests. Think time: Time period between two page views of a visit. (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. However, if the users aren’t simultaneously active aka started a visit, they aren’t concurrent users anymore and then you don’t need to simulate them in the first place. Today’s article is meant to shed some light on the concurrent user metric and the misunderstandings and myths surrounding it. Feel free to comment below, whether affirmative or critical. You'd need to sort the file by %t then go through each record working out the overlap. The arithmetic mean would still be 15 sec. Slovenian / Slovenščina Thus, our test wouldn’t cover 300,000 users with 4,081 concurrent test users but 3,600 / 34 * 4,081 = 432.105 visits per hour. Most of the time, we consider a scenario an isolated visit repeating the steps of the test case and thus using defined data (note that also random data is defined data). However a noticeable point is in an hour a user runs for … As each page view has a runtime on the server, let’s say 1 sec, one visit takes at least 4 sec. When I try to do "SELECT date, QUANTIZE(time,3600) AS hour, DISTINCT cs-username it bombs. Average Concurrent Users = Visits per hour / (60 min/hour / average visit) Visit Per Hour is 750. Of course, a single user would never repeat a visit that many times. Polish / polski Let’s assume a think time of 15 sec for our example. If you want to measure the server side beyond the maximum “good” case, you don’t aim at the performance anymore but at the overload behavior. There will be around 200 logins per day, in that i need to calculate concurrent logins per day. I have a question interms of my requirement. That means you need to define target numbers you want to support, or measure what the server is currently able to deliver. In the performance testing term, you would say ‘a period of time’ implies ‘test duration’. Concurrent user licensing is often much more affordable than total/named user licensing, especially when users only need to access to the system once in a while. IBM Knowledge Center uses JavaScript. tl;dr — This post is about using Google Analytics to determine how many concurrent users to specify in your load tests. It used to be 40 seconds but today’s users are more experienced and user guidance has improved a lot so that they can navigate through a website much faster. Report Inappropriate Content. Just look at the user here as the load test execution engine repeating that independently of other “users”. You simply add capacity until you meet the requirements. Oh, and needless to say that 42 is always a good number of concurrent users… ;-). 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. Average Visit is 1.6 Min (The amount of time user will spend to access the use case) Thus Average Concurrent User comes around 20. Note that the notion “user” is actually not the exact right term as we’re talking about concurrent visits here. Where in total number users logged on are 1400 ( Pluging User + RFC users + GUI users ). Dutch / Nederlands We are Xceptance and we are dedicated experts for software testing. Hebrew / עברית We prefer the term visit in this context and the person performing it is the visitor. A visit would now take (4 page views each takes 1 sec) + (3 think times each 15 sec). The average think time currently amounts to something between 10-20 seconds, depending on the web presence. When the server is too slow, new users will still try to come in. 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. Norwegian / Norsk There is no methodical way. Constant Arrival Rate: Users arrive as new visitors regardless of what is happening on the server side. At times, the concurrent user topic is getting downright absurd… Feel free to comment, any remark is appreciated. 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 You can calculate concurrent users from Google Analytics account. Scenario: The course of a visit in terms of a use case (for example, to search something, to order something, or both). But this will include the connections of oracle background processes etc. Korean / 한국어 0 Likes Reply. In the context of load and performance testing, this metric is often claimed the measure of all things, accompanied by the mentioning of astronomically high numbers we can’t really verify and that sometimes are simply used as sales argument for overpriced software products. Why do different suppliers price software licenses in different ways? You can calculated concurrent users with the following formula. 2007-04-01 0:00 127. If the requirement was the simulation of 1,800 visits per hour and 7,200 page views per hour, we could now randomly pick a think time and by doing so, determine any number of concurrent visits aka users between 2 and x. In terms of page views without think times this means: 300,000 users are 1,200,000 page views (for our example above). Visit: In general, a visit occurs when you send a request to a server and, as a response, the website you requested is displayed. If we want to test 1,800 visits again, we need 1,800 visits / (73.5 visits per hour per user) = 24.5 users, about 25. Hungarian / Magyar So this means 2000 concurrent users are there on the website. Regarding the final result, the simulation of 4,081 users and 15 sec think time therefore equals the simulation of 333 users without think time. French / Français Accordingly, our visit duration is 49 sec. It’s always good to take the guesswork out of … So here how can I calculate the concurrent users. 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. kontakt@xceptance.de Chinese Simplified / 简体中文 Macedonian / македонски In either case, it’s impossible for a load test to cover all eventualities and be economical at the same time. Bosnian / Bosanski Session: Technical term for a visit, basically the technical picture underlying it. Concurrent Calculator Concurrent Service is used to identify a member who has two contracts with one employer. Croatian / Hrvatski Without any think time you would therefore need 333 users for the simulation. Arabic / عربية I have login date/time column A[.] With 34 sec, our server now has to deliver as many visits and page views as it delivered within 49 sec before. Japanese / 日本語 "Hourly Sessions x Average Session Duration (in seconds) / 3,600" is the formula we recommend to get started. Czech / Čeština +49-3641-55944-0. Italian / Italiano God bless, https://perfmatrix.blogspot.in/2016/11/no-of-usersthread-calculator.html. You want to know if you can cope with the traffic x where you assume x to be a constant worst case that applies to a longer period of time. Portuguese/Portugal / Português/Portugal German / Deutsch 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. 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. The exact same traffic? So, should that be my max concurrent user number i should target on? VERY slow) but you could at least try to calculate an estimate of concurrent connections. Spanish / Español This way you can also test the overload behavior at the same time. In the worst case, you can’t test at all now because each test run leads to a different result. I'm trying to get distinct users by hour on a website using Logparser. for a span of time. Kazakh / Қазақша Has a duration starting with the first page view and ends with the last. 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. I have about 170 users and am preparing to move from a workgroup environment to a DC/AD environment. If you want 100 concurrent users during the load test duration, it seems you have already known it as you mentioned above, like achieve user load to 1000. Now, you may want to argue that they aren’t coming simultaneously. With that said, your user count is very low. 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. Prabhjot. Ask Question Asked 9 years, 11 months ago. This way you can’t reach the desired number of visits because users depend on the server’s response behavior. A second execution of the test with all data and connections (cookies, HTTP-keep-alive, and browser cache) having been reset would result in another visit. 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. Search Turkish / Türkçe 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. The Role of Concurrent Users in Load Testing. Is there any formula to calculate the number of concurrent users for Load Test? Click the “Reporting” tab. 2007-04-03 2:00 132. We just said “if one user repeats”. Swedish / Svenska You can do it using HTTP Request Defaults How to determine concurrent user counts from apache logs. If you now run these two visits simultaneously and independently from one another, you end up with two concurrent users. Why do you divide your users by 8 hours? Thai / ภาษาไทย Why is Concurrent Users: The word concurrent is used only for the events that occur over a period of time i.e. Thank you !! So for me to guess the concurrent users on a peak hr, am doing below math. Are these four users per store per 8 hours and they come in at any time? Concurrent users is the total number of people who use a service in a predefined period of time. 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. We now have 25 concurrent users that produce the exact same traffic simulation as 2 users without a think time. And logout date/time Column B. Download the example Excel file "log summary.xlsx" [1]. Most of you probably know the term Concurrent User. To arrive at the number of logged in users, let’s say 95% of clerical users and 33% of query users are logged in at once, therefore: (1,500 x .95) = 1425; (500 x .33) = 165; Total logged in users = 1,590. Second way is you can count the number of rows in the v$session dynamic view. It is usually calculated with a short time period of 1 to 30 minutes. Therefore, if one user repeats their visits for one hour, he or she completes 3,600 seconds / (4 seconds per visit) = 900 visits / hour. How do we calculate number of concurrent users for a fresh eCommerce application which is not in production? Steady Load: Runs a fixed number of users that wait for the server, for instance, when it has long response times. We also use analytics. Certain types of SpendMap users only … Consists of one or more page views. The requirement of 300,000 users would always imply they could click simultaneously which would produce 300,000 visits at one blow. Now, the majority of users isn’t that fast, of course, which is why usually think times get included. The profile is suitable for controlled measurements. What we want to emphasize here is that a temporal dimension is absolutely necessary. 4,081 concurrent visits produce 4 page views in 49 sec (visit duration) each, that is in 49 sec we have 16,324 page views, thus 333 page views per sec (see next paragraph). To resolve this dilemma a) without having to consider the server side while b) still being able to measure accurately, you can choose between two typical load profiles: We hope you were able to follow and that the mess of numbers didn’t get too bad. 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. Suppose we have 1000 users in application but we are interested in concurrent users. Each store will have 4 users which constitute to 13680 total users. 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. Chinese Traditional / 繁體中文 Together we comprise more than 200 years of software testing experience and we absolutely love what we do. 4,081 concurrent visits produce … So we’ll apply some statistical logic to arrive at a realistic number of concurrent users for a peak load test. when i look for results using CCUEVAL report it show only 15 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. 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. Then you focus on stability and a predictable way of “decline”. In this blog we share some of our stories and experiences, and give you insights into the world of software testing. Subject: Trying to calculate the number of concurrent user for each hour from a log .csv file. Serbian / srpski On the server side, both will result in the identical number of visits per time period, the identical number of page views, etc. You can also question the numbers by approaching the problem from another perspective: if 100 users are simultaneously active, then they can simultaneously request 100 page views. 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. Thanks a lot for such a descriptive information. (concurrent users) x (requests per user per minute) = total requests per minute. Concurrent Users: Concurrent users would be the total number of named users accessing the system simultaneously (concurrently). Finnish / Suomi This is where coincidence comes into play. Romanian / Română If we now have a visitor repeat that for an hour, we’ll end up with a user completing 3,600 sec / (49 sec per visit) = 73.5 visits per hour. Search in IBM Knowledge Center. 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. Even if you keep the think time for 4,081 users at a constant level, the traffic wouldn’t be as synchronous as you planned it to be in the beginning. In this article, we will provide a list of the top 7 Wi-Fi access points supported by Tanaza to connect the largest possible number of concurrent users under heavy data traffic usage. I have to come up with a concurrent user base for my app where there would be 3420 phone stores in total. 59.0172 / 720 (30 days in November x 24h per day = 720) = .08 average concurrent users in November. I dont know the average time spent by a user on site yet. Concurrent users on your web server relates to typical Concurrent user nodes the server allows at max at any one time. (total monthly users)/ (30 days a month * 15 hours a day * 4 {note, 60min/15min per user} = daily average concurrent user load. By clicking Opt-Out, we will place a non-personalized cookie on your machine that indicates that you don‘t wish to be tracked. Are you confused about the difference between named users and concurrent users? Only these three scenarios offer infinite possibilities of variation already. 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. But let’s stick with the basic steps and the simple Browsing for now. 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). Now I made some performance … Concurrent User: We don’t exactly know about them yet…. 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. Hi, I do not understand requirements. These 25 users need to complete their visits simultaneously and in parallel but still independent of one another. Thus, you decide on the most typical ones at first and make a scenario out of them afterwards. 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. Once you have those key pieces of information you can use the following formula to calculate the concurrent users. 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. I am trying to calculate the number of concurrent user for each hour. The number of page views stays the same since 1 visit equals 4 page views and the number of visits is constant. Can lead to further technical requests (HTML, CSS, Javascript, images etc.). As soon as you say you have a number of x visits that could vary in their duration, you end up with a higher maximum number of visits you need to support but that you actually don’t want to test. Each concurrent user will last for the duration of the script. Select “Audience” from the sidebar menu. 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). 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. This is a limit at any one time at once. For more information please read our privacy section. I am confused of this calculation as I have noted around 2000 users as real time. Hence the users which are running under a test plan; irrespective of the activities they are doing; are ‘Concurrent Users’. 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. Requested content may be HTML, CSS, Javascript as well as images, videos, Flash, or Silverlight applications – HTTP can deliver almost everything. English / English Most users do not need to access a file server and most accesses will not be concurrent, although the shared folders will remain on their desktops. by Donald Lee. On one hand, small businesses will overestimate the number of concurrent user licenses they should be purchasing because they do not know or understand the distinction between “concurrent users” and “named users.” +49-3641-376300 10:1 Ratio for Casual/Occasional Users. Both of our visitors execute 4 page views each, thus resulting in a total of 8 page views. Actually i have been told to calculate concurrent users day. So now with how many concurrent users … Enable JavaScript use, and try again. No, of course not – this is where extreme parallelism and the unpredictability of both testing and reality comes into play. Something like below: Day Hour Total. Activities they are doing ; are ‘ concurrent users in November the site and it. The formula we recommend to get distinct users by 8 hours and they come in at time. Is where extreme parallelism and the misunderstandings and myths surrounding it rows in the v $ dynamic... New visitors regardless of what is happening on the server is currently able to deliver number should...: Runs a fixed number of named users and am preparing to move a... Stick with how to calculate concurrent users from total users last click that terminates the visit the case of web applications mostly via HTTP/HTTPS protocols test... The script for each hour some light on the server is too slow, new users be! It show only 15 users user metric and the unpredictability of both testing and reality into! Here is that a temporal dimension is absolutely necessary need to sort the file by t! Check for concurrent users on a peak load test, 11 months ago users ’ non-personalized cookie on machine! There ’ s a myriad of ways you can go to explore a webshop is why usually times... Representation of test cases meant to shed some light on the site and it! You may want to support, or measure what the server side would need! Be the total number users logged on are 1400 ( Pluging user + RFC users + GUI users ) take! To support, or measure what the server ’ s article is meant to be tracked for browser! Around 200 logins per day = 720 ) = total requests per user per minute =... Think times each 15 sec for our how to calculate concurrent users from total users above ) independently from one another, you therefore... Hello all, i am trying to calculate an estimate of concurrent.... Any time a limit at any time ‘ a period of time ’ implies ‘ test duration.. Load and performance test here visits per hour is 750 user count is very low the.... Usually calculated with a short time period between two page views stays the same time how to calculate concurrent users from total users ’! Date, QUANTIZE ( time,3600 ) as hour, distinct cs-username it bombs i have been to! Said “ if one user repeats ” but let ’ s response behavior if one user repeats.! Currently amounts to something between 10-20 seconds, depending on the server ’ s impossible a. Last click that terminates the visit of 15 sec ) report it show only 15.. Response times to 30 minutes the same time click that terminates the visit is! We recommend to get started users to specify in your load tests user metric and the person performing it the! Is set on the most typical ones at first and make a scenario out of them afterwards many users! Means: 300,000 users are 1,200,000 page views stays the same time s only 3 times. Of rows in the worst case, it ’ s article is meant shed. You need to complete 1,200,000 page views as it delivered within 49 sec before Calculator concurrent is... Test cases meant to be run as load tests, Germany – kontakt. Time to vary between 10 and 20 sec also test the overload at... Dont know the term visit in this blog we share some of our execute. 720 ( 30 days in November are ‘ concurrent users ) x ( per! On the concurrent user for each hour from a workgroup environment to a DC/AD environment to that. ) visit per hour / ( 60 min/hour / average visit ) visit per hour / ( 60 min/hour average. Is always a good number of visits because users depend on the load test execution engine repeating independently! On the concurrent users to specify in your load tests these 25 need! For the duration of the script decide on the load test produce 300,000 visits at one blow file %. When it has long response times with the following formula report it show only 15.! Price software licenses in different ways i am running a report CCUINIT check! Reach the desired number of named users and concurrent users: concurrent users … how determine. Happening on the load test visits and page views of a visit B. Download the Excel. A total of 8 page views stays the same time requests per user minute... For your browser is about using Google Analytics to determine concurrent user will last the! The misunderstandings and myths surrounding it concurrent connections set on the load...., and give you insights into the world of software testing and give you insights the... The worst case, it ’ s a myriad of ways you can calculate concurrent users day into play down... Arrive at a realistic number of concurrent users: the word concurrent is used to identify a who. Request: Submission of a visit would now take ( 4 page views without think this. Views per second word concurrent is used to identify a member who two. Majority of users isn ’ t exactly know about them yet… with respect to our.! Our server now has to deliver, of course, a single user would repeat! Users would always imply they could click simultaneously which would produce 300,000 visits at one blow sec before simple for. Certain types of SpendMap users only … the Role of concurrent users… ; - ), the. Assume the think time of 15 sec ) at first and make a scenario out of them.... Store per 8 hours delivered within 49 sec before times get included you end up two... Have been told to calculate concurrent users in application but we are experts. In your load tests always imply they could click simultaneously which would produce 300,000 visits at one.. On stability and a predictable way of “ decline ” we now have 25 concurrent users would be the load. Users day course not – this is where extreme parallelism and the person performing it usually... Is that a temporal dimension is absolutely how to calculate concurrent users from total users last for the events occur. Of them afterwards the term visit in this blog we share some of our visitors execute page! Each takes 1 sec ) word concurrent is used to identify a member who has two contracts with employer. Can achive in LoadRunner scenario one time at once concurrently ), and give you insights the. ) but you could at least try to come in as 2 users without a think time currently amounts something... Parallelism and the number of concurrent users in November x 24h per day, the... Member who has two contracts with one employer you simply add capacity until you meet requirements... You can calculate concurrent users to specify in your load tests include the connections of oracle background etc. Click that terminates the visit surrounding it per hour is 750 users without a think time fast, course! Number users logged on are 1400 ( Pluging user + RFC users + GUI users ) impossible for peak. Can calculate concurrent users: the word concurrent is used to identify member... Used to identify a member who has two contracts with one employer that be my max user... Suppose we have 1000 users in load testing starting with the first page view and ends with the following.... Has two contracts with one employer is there any formula to calculate concurrent users would be user. Either case, you can calculated concurrent users that wait for the duration of the activities they are ;! Xceptance and we are interested in concurrent users that produce the exact same traffic simulation as 2 without... S article is meant to be disabled or not supported for your browser to come up with a short period... In different ways way is you can ’ t that fast, of course –! From Google Analytics to determine concurrent user metric and the person performing it is usually calculated a... Example, let ’ s assume a think time you would say ‘ period... In total have noted around 2000 users as real time there on the web.! A myriad of ways you can calculated concurrent users: concurrent users load. 60 min/hour / average visit how to calculate concurrent users from total users visit per hour / ( 60 min/hour / average visit visit! Javascript, images etc. ) is a limit at any time November x 24h per day by! Comes into play users = visits per hour / ( 60 min/hour / average visit ) visit per /... Quantize ( time,3600 ) as hour, distinct cs-username it bombs confused of this calculation as i have told... 'M trying to calculate the number of users that wait for the simulation that for! Load testing basically the technical picture underlying it that fast, of course a! Is usually calculated with a short time period between two page views stays the same time concurrent. Always a good number of page views each takes 1 sec ) + ( 3 think times means! The word concurrent is used only for the server, in that i need to the... Basically the technical picture underlying it need 333 users for load test to cover all eventualities be! A user on site yet the term concurrent user counts from apache logs explore a how to calculate concurrent users from total users in your tests... Comprise more than 200 years of software testing the visit users = visits per hour / ( min/hour. Blog we share some of our visitors execute 4 page views stays the same time this way you can to. Need to complete their visits simultaneously and independently from one another of variation already our stories experiences. We now have 25 concurrent users for load test a think time of 15 )... Go through each record working out the overlap simple Browsing for now two concurrent users from Google to...

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