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From zhouyuan <yz...@microstrategy.com>
Subject Re: How to get transaction time into a user defined variable?
Date Thu, 06 Jan 2011 15:34:00 GMT


sebb-2-2 wrote:
> 
> On 6 January 2011 15:10, zhouyuan <yzhou@microstrategy.com> wrote:
>>
>>
>> Felix Frank-2 wrote:
>>>
>>> On 01/06/2011 06:43 AM, zhouyuan wrote:
>>>>
>>>>
>>>> Felix Frank-2 wrote:
>>>>>
>>>>>> No, I'm not trying to chopping off the last three digits, I just
want
>>>>>> to
>>>>>> get
>>>>>> the transaction time through subtracting the 2 timestamps...but i
>>>>>> couldn't
>>>>>> do any operations on time1 and time2 directly. It seems that the
>>>>>> time1
>>>>>> and
>>>>>> time2 are int variables by default? There are some extra lines just
>>>>>> because
>>>>>> I tried to debug this problem.
>>>>>
>>>>> The variables are untyped to BeanShell - their values are inserted
>>>>> verbatim (as numerals) into your script.
>>>>>
>>>>> Your log shows a "number too large" error, hence my suggestion to drop
>>>>> the milliseconds.
>>>>>
>>>>> Your computation of "long response1" should produce a valid timespan
>>>>> in
>>>>> milliseconds, I believe.
>>>>>
>>>>> ---------------------------------------------------------------------
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>>>>>
>>>>>
>>>>>
>>>>
>>>> Hi Felix,
>>>>
>>>> The problem is that I can't do any computation on time2 and time1, you
>>>> suggest me to drop milliseconds through dividing them by 1000? Or do
>>>> some
>>>> formatting with the time function?
>>>> I also tried like this:
>>>> int a=1;
>>>> ${__log(${a},OUT)};
>>>> int b=2;
>>>> ${__log(${b},OUT)};
>>>> int c=b-a;
>>>> ${__log(${c},OUT)};
>>>> But the console output is:
>>>> Log: Thread Group 1-1 : ${a}
>>>> Log: Thread Group 1-1 : ${b}
>>>> Log: Thread Group 1-1 : ${c}
>>>>
>>>> Is there anything wrong with my script?
>>>
>>> Careful: ${a} supposes that there is a variable *on the Test Plan level*
>>> that is named a (e.g., created by a RegexExtractor or
>>> UserDefinedVariables).
>>>
>>> Before Jmeter sends your BSH Script to the interpreter, it substitutes
>>> all occurences of ${a} by the value of this Jmeter variable.
>>>
>>> "int a=1" on the other hand creates a variable local to your BSH Script.
>>> The two types of variables can't be mingled.
>>>
>>> To manipulate Jmeter variables, use the vars object from BSH.
>>>
>>> From your earlier error logs, I assume time1 and time2 are actual Jmeter
>>> variables. To loose the milliseconds, I suggest using them as strings,
>>> chopping 3 characters using substr() or whatever that is in BSH and then
>>> parse it to a long value.
>>>
>>> HTH,
>>> Felix
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: jmeter-user-unsubscribe@jakarta.apache.org
>>> For additional commands, e-mail: jmeter-user-help@jakarta.apache.org
>>>
>>>
>>>
>>
>> I tried to create UDVs first and then do the computations above, but I
>> still
>> can't get any output using __log function in the console. Could you give
>> me
>> an example that works fine in basic computations and we can also watch
>> the
>> variables in some way? Thanks!
> 
> Use print() for debugging BSH scripts.
> 
> __log is intended for use in GUI fields, not scripts.
> 
> Use Debug Sampler + Tree View Listener for showing variables.
> 
>> --
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>> Sent from the JMeter - User mailing list archive at Nabble.com.
>>
>> ---------------------------------------------------------------------
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>>
>>
> 
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> 
> 
> 

Thanks! But I still don't know how to do simple computations or variable
assignments... I tried to create variables in UDV and use them in BSH like:
long rt=prev.getTime() but the sampler shows that rt is still empty... And
where can I find the reference about functions in BSH like prev.getTime()?
-- 
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