Query regarding transaction flow
Hi,
I have a query regarding the timing information shown in transaction flow.
As shown in attachment the Response Time for user action "Click on iAnalyze" is 8631ms and if I see the transaction flow for user action I can see the time spent on web server is 1.15s, on app server it took 11.86 s,in domain less call it spent 5.74s and on sql server it spent 122.93ms.
Now my question is how the response time is calculated as 8631ms because if I sum up all the time on each tier it is coming more than 8631ms.
Please help me to find out the exact reason for this
Hi Joshi
PurePath is able to follow synchronous and asynchronous transactions. In the Transaction Flow you see the time spent on each tier including time spent when this tier is called asynchronously. To the end user the Response Time might be 8.6 seconds. But on the backend you may execute some asynchronous tasks that take longer. Thats why the sum of each individual tier might be bigger than the response time
Andi
Thanks for the reply Andi, I want to know is there any way to get the timing information of asynchronous tasks.
You can analyze the PurePath. If you look at the PurePath tree you will see nodes like "asynchronous invocation" - simply search for async in the purepath tree and you will find them. These nodes indicate that "the caller" is executing an asynchronous task. The actual async tasks is whatever is shown underneath that async invocation node. If you start your analysis there you know which time is spent in these async execution paths
Just by looking at the PurePath but not as a measure.
What you do get as a Meausre however is the "Response Time" and "Duration". Response Time is the time perceived by the end user and is basically the end-to-end time of all Synchronous activities triggered by the initial request. "Duration" on the other hand also includes the time for all async activities to be completed. So - by looking at these two metrics you get a good understanding of the additional processing time that happens asynchronously
Andi
Hi Andy,
Is there any way to see the asynchronous activities.
Regards,
Prathamesh
Yes there is. In the PurePath you can easily spot them by searching for "Async" - just as highlighted in the following screenshot. You can also easily tell whether a PurePath is executing some asynchronous activity that takes a while in the background by looking at Duration and Response Time of the PurePath. If these two numbers do not match up you definitely know that some asynchronous activity was triggered by that transaction that takes longer than perceived by the End User
I know this is a foolish question but I want to know that whether the asynchronous time is calculated for server time only or it is calculated for client time as well.
There are no foolish questions - just fools that dont ask 
To answer your question: The Client Time is impacted by server-side Response Time. The Response Time however is only including synchronous activities. A PurePath's Response Time is measured when the entry point (e.g: Web Request) is finished. If there is still asynchonrous activity going on it is not impacting Response Time. The async time is reflected in the PurePath Duration which tells you how long the PurePath including all async activities lastet
Andi
I there a way to see/display these synchronous and async components relative to the whole transaction trace "sort of" like how dT displays hotspots in the upper left frame-let. For example one bar for the whole transaction duration. Then other parallel bars for the processings in the different agent nodes, and for both sync and async processings inside those, basically visually showing relatively when those processings were occurring (start to end times of them relative to the whole purePath). Basically somewhat simular idea as the hotspot display to give you a visual reference of what was happening in the selected purePath. Is this ability already there somewhere and I've never connected with it. I don't see a way to get this out of the transaction flow dashlet or the hotspot either but I might have missed some button somewhere.
Thanks,
Rich
Can you please elaborate how the response time is calculated and does it calculate client time in response time.
The Response Time of a PurePath is the execution time of the first node in the PurePath. In yesterdays Community Webinar I discussed Response Time vs. Duration as well as Exec Time vs. Total Exec Time. You can watch the recording on APM University: http://apmuonline.compuwareapm.com/course/view.php?id=724
Here are two images of the slides I used to explain these numbers:
The Response Time of PurePaths DOES NOT include Client Time. Client Time can be seen if you have UEM. It is captured and shown in the User Action PurePaths
Hi, Could you please help me to chart the response time of each tier?
