hi so why not use a timestamp (different threads may have same values , is this allowed?) http://jakarta.apache.org/jmeter/usermanual/functions.html#__time again we can help you write a shared incrementing counter , the only question is do you really need it or whether there are simpler ways. regards deepak
On Thu, Dec 9, 2010 at 4:47 PM, Josh Abts <[email protected]> wrote: > I am not exactly sure how to add a class to do this like you mentioned. > Still new to JMeter. > > Basically what I am trying to do is I have a list of coordinates in a CSV. > Each HTTP request contains a pair of coordinates (from the CSV) and then a > timestamp. But the timestamp should be increasing by some value > continuously (persisting throughout runs). As a very simple example, > assume > the csv contains 3 pairs of values {1,2; 3,4; 5,6} The requests would look > something like this: > > http://myurl/?a=1&b=2&c=2010-12-9T11:15:00 > http://myurl/?a=3&b=4&c=2010-12-9T11:15:10 > http://myurl/?a=5&b=6&c=2010-12-9T11:15:20 > http://myurl/?a=1&b=2&c=2010-12-9T11:15:30 > ...etc. > > So we can't easily add values into the CSV because we want the time to > continuously count up say if we had 200 threads in a forever loop for 5 > minutes. Between runs it is fine if the time resets, but there should be > persistence among threads and loops. > > I was able to get the CSV to loop properly, its just the time persistence > that is the issue. > > Any ideas, samples/pointers? > > Thanks for the help! > Josh > > On Thu, Dec 9, 2010 at 4:59 PM, Deepak Shetty <[email protected]> wrote: > > > Hi > > variables arent shared across threads (even in the same thread group) > > Properties are shared , but when you use multiple threads then you need > > some > > way to synchronize access so that only one thread increments the counter > at > > any one time. You could do this with Beanshell , but possibly it will be > > simpler to write a java class that holds a static counter that increments > > synchronously and just call it in a beanshell function to give you your > > number (avoids having the sampler in your results). > > > > However the first question to ask is why do you need actually this ? or > do > > you know how many numbers you need in advance (or a maximum) ? if you do > > then you can just generate a CSV file before you run your test(as part of > > your ant build or as a separate threadgroup or something) that has the > > numbers and use a CSV data set config (you can choose the sharing mode > > option that says all threads or current thread group) > > > > regards > > deepak > > > > On Thu, Dec 9, 2010 at 2:50 PM, Josh Abts <[email protected]> > wrote: > > > > > Hello all, > > > > > > So I am a little confused with how variables are working in a single > > Thread > > > Group. > > > > > > I have attached a "User Defined Variables" config element to my thread > > > group. From there I setup a HTTP Request sampler under the thread > group. > > > I > > > also under the thread group have a BeanShell Sampler with a script that > > > basically acts as a special counter to modify the User defined > variables > > > that are used in the Http request. > > > > > > But when I run the test using say 3 threads and 1 loop, it only makes 3 > > > http > > > requests using the same value of the variable (the initial). If I run > it > > > with 1 thread and 3 loops, it works as intended, giving 3 different > > values > > > properly incremented by the BeanShell sampler. > > > > > > In reading I ran across something that mentioned using JMeter > Properties > > to > > > share values between threads. But even with that I am still not able > to > > > get > > > it to properly use the values. > > > > > > What is the proper/best way to have a shared value among all the > threads > > so > > > that it increments properly? And is a BeanShell sampler the proper way > > to > > > ensure it increments properly? I am using a CSV data set config for > the > > > http request for two variables in it. So essentially the CSV has a > > static > > > list of values that is looped through but the counter should keep going > > up > > > independently of that and just tags those values. > > > > > > My test hierarchy looks as such: > > > > > > Test plan > > > |- Thread Group > > > |- Http Request > > > |-Simple Data Writer > > > |- BeanShell Sampler > > > |- User Defined Variables > > > > > > Hopefully that is clear enough, if not, let me know I can provide any > > > additional details/samples. > > > > > > Thanks! > > > > > > -- > > > Joshua Abts > > > > > > > > > -- > Joshua Abts > IT Specialist > VisTracks, Inc. > [email protected] > (630) 596-5426 >
