[CLOSED] performance problems

  1. #1

    [CLOSED] performance problems

    "We are observing a lot of performance issues
    related to the usage of Coolite Toolkit Version 0.8.

    <p class="MsoPlainText">We have performed a test creating:</p>

    <p class="MsoPlainText">- a web page with a GridPanel; in the GridPanel there are
    about 20 columns with several type of data; data are extracted from a SQL
    Server DB that execute a paging of 15 record per page.</p>

    <p class="MsoPlainText">- a web page with an ASP.NET GridView with the same data
    as above.</p>

    <p class="MsoPlainText"> </p>

    <p class="MsoPlainText">Executing this application on a Xeon web server with 2 GB
    RAM we have noticed that the GridPanel/Coolite page takes the CPU usage to 100%
    after a few calls (6) whereas the GridView/ASP.NET page let the CPU usage at
    about 2%.</p>

    <p class="MsoPlainText"> </p>

    <p class="MsoPlainText">Is this the expected behaviour? Has Coolite this high
    resource consumption?"</p>
  2. #2

    RE: [CLOSED] performance problems

    Hi,

    Can you provide more details? Is it that 100% usage is constantly persisted? I mean that you see 100% usage if no any additional requests or is it short-term booms? Do you able to reproduce it om another computer? Do you able reproduce it with Local Web Development Server or is it IIS only issue?
  3. #3

    RE: [CLOSED] performance problems

    Does this spike happen on all requests for that page? Or, just the initial request?

    Which version of IIS are you running?


    Which operating system?


    Geoffrey McGill
    Founder
  4. #4

    RE: [CLOSED] performance problems

    Hi,
    thank you for your attention.
    The extreme consumption of CPU resources is a peak related to a single call (not the first one).
    The problem is that a few contemporary calls are enough to bring the cpu usage to a persistent level of 100%.

    We have tested this behaviour on
    - Xeon web server with 2 GB, Windows Server 2003, IIS 6.0
    - Xeon web server with 2 GB, Windows Server 2008, IIS 7.0
    - Pentium 4 with 3 GB, Windows XP, Local Web Development Server (Cassini)

    Our application is running in a web farm with 3 Xeon web server (IIS 7, WinServer2008) and we have approx. 500 contemporary users.
    We have checked that there is no problem related to DB or network.

    Thanks a lot

    Salvatore Giuffrida
    Abaco Team Sistemi
  5. #5

    RE: [CLOSED] performance problems

    Hi,

    Do you able create test project which demonstrates that issue? Or that issue is reproducible in your application only?
  6. #6

    RE: [CLOSED] performance problems

    Hi Salvatore,

    Please post a code sample showing the GridPanel and Store configuration.


    Server DB that execute a paging of 15 record per page.

    Can you confirm that only 15 records are being returned to the client/browser? You are performing server-side paging?






    Geoffrey McGill
    Founder
  7. #7

    RE: [CLOSED] performance problems

    Hi.
    While we was preparing sample test page to show you our configuration we have noticed that a big part of the problem was related with the desktop and the huge amount of data sent to the server.
    We are testing a new way of binding stores to data through handlers instead of refresh data (which implies the post back of all page's data).
    The GridPanel seems to be fast enough now.
    The issue is moving on forms but we will send another post on it.
    For now, thanks a lot and sorry for the hoax.

    Salvatore
    Giuffrida
    Abaco Team Sistemi

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