These are the 2 terms which is often used in Performance Testing.
Simultaneous users are the users who have a valid session in the server. Each of the users would be performing different actions like one doing login , other viewing the reports, etc.
Concurrent users are the users who have a valid session in the server & they are performing the same operation at any point of time. All the concurrent users would perform login, reports download, etc at the same point of time.
Hence for a web site, the number of simultaneous users would be always greater than the concurrent users.For example , a banking web site has the workload of about 30000 simultaneous users & 5000 concurrent users.
Knowing the correct figures of simultaneous & concurrent users is very vital in order to perform performance testing of an application.
Simultaneous users are the users who have a valid session in the server. Each of the users would be performing different actions like one doing login , other viewing the reports, etc.
Concurrent users are the users who have a valid session in the server & they are performing the same operation at any point of time. All the concurrent users would perform login, reports download, etc at the same point of time.
Hence for a web site, the number of simultaneous users would be always greater than the concurrent users.For example , a banking web site has the workload of about 30000 simultaneous users & 5000 concurrent users.
Knowing the correct figures of simultaneous & concurrent users is very vital in order to perform performance testing of an application.
12 comments:
Nice Piece of information....Few good blogs on performance testing
Cheers
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thanx for the information
Genial dispatch and this mail helped me alot in my college assignement. Thank you on your information.
Good Explanation....
Nicely explained. simple and crisp.
But check the final statement: "for a web site, the number of simultaneous users would be always greater than the concurrent users.For example , a banking web site has the workload of about 30000 simultaneous users & 5000 concurrent users."
the numbers should be reversed I guess.
Cheers.
how do you figure out correct figures of simultaneous & concurrent in order to perform performance testing of an application?
I guess the definition is vice versa..Simultaneous users are the ones performing same activity at some point of time.
To the point. Crystal Clear :) Thanks!
it's an old post , but it might be explained exactly the opposite way
http://learnloadrunner.com/introduction/difference-concurrent-vs-simultaneous-vuser/
Indeed good differentiation! But, it is in contrast to the definitions given in LoadRunner's world! They say exact opposite things...
Concurrent users - active users who may or may not do the same task at a time
Simultaneous users - They perform the same task at the same time.
Confusing!! Which one should be referred to?
Hi,
I Think you mentioned vise-versa.
If you dont mind Can you please check once again..
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