Hi, Use a Profiler to show you exactly where time is spent. Yoav Shapira Millennium Research Informatics
>-----Original Message----- >From: Allistair Crossley [mailto:[EMAIL PROTECTED] >Sent: Sunday, April 11, 2004 3:51 PM >To: [EMAIL PROTECTED] >Subject: Tomcat and my application's performance ... time being lost? > >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 > > > > > ><FONT SIZE=1 FACE="VERDANA,ARIAL" COLOR=BLUE> >------------------------------------------------------- >QAS Ltd. >Developers of QuickAddress Software ><a href="http://www.qas.com";>www.qas.com</a> >Registered in England: No 2582055 >Registered in Australia: No 082 851 474 >------------------------------------------------------- ></FONT> This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
