Hello Guys
*sigh* I am trying to make my app work as quick as possible but look at these stats...
Page name: page_6 page_7 page_8 page_9 page_10 page_11
Min web transaction (without images): 460.79 1962.42 2296.12 2881.90 2660.72 1640.80
Avg web transaction (without images): 3681.05 3637.22 3472.87 3935.36 4368.14 3877.93
Max web transaction (without images): 5425.64 5875.14 5977.36 6194.46 7140.51 6557.30
That's 20 users x 3 iterations. What is puzzling me is that I have wrapped code-level
timings around the very top entry point of the Struts action and the very bottom.
These timings are coming out at sub 0.5s. I also have done the same in the top level
template JSP that includes every page and the pages for the most part are timed at sub
0.4s.
In general though add them together and I get sub 0.5s for execution of backend and
frontend code.
But look at the average transaction time above and 3+s is the best my Tomcat
configuration is doing. I am beginning to suspect that this is not to do with my
application code if my timings are so fast??
I suppose these type of timings are only for the running of the code and do not cover
the time it takes for the user click to the Action itself, and also again for sending
the page as a response stream?? Although the timings show fast execution, does this
include sending the response stream itself - I don't think it does.
I have tried this now on my home machine and 2 servers so I don't think it is to do
with network latency or anything like that. I am pretty sure something in the
application is slowing down but I have timed pretty much everything from database
calls, page compilation and so fourth and it is all ultra-fast...so where is my time
going?
--> User Click
--> My Action Servlet extends Struts Action Servlet framework
--> Action Servlet calls Struts framwork I presume
--> Struts framework calls my BaseAction (this is what I time)
--> My Action class does it's work
--> my BaseAction returns (output total time here = sub 0.5s)
--> Struts/tiles handles sending JSP view to user
--> My template JSP is called by Struts (this is timed again < 0.4s)
So if my code timings are really fast, then it could be Struts that is consuming the
extra time?
Advice on where can I turn next to determine the missing time is so very much
appreciated.
ADC
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