Data UpdateTime to Web Station

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Viewing 8 posts - 1 through 8 (of 8 total)
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  • #3396
    Avatarcatcute
    Participant

    Hi
    I have the trouble with real data update to web station.
    My application is Rapid Scada connect with OPC server and display to web. I also use the Real time data export to DB module to save data to SQL Server. And config logging the data change event of 10 items to SQL server. The logging is OK. But at Web Station, when i click Events button to display changing value event-> It make the data update to table on web very slowly, it take around 30->40 seconds (the real OPC item value change every second!), when I click Event button again to hide Event table, data update to table more faster (every second). Do we have any solution to make the data update to table on web faster when we click event button to see event table?

    #3397
    MikhailMikhail
    Moderator

    Hi,
    How many events are stored per day or per hour? Please provide screenshots and logs.

    #3399
    Avatarcatcute
    Participant

    For testing purpose, I config 40 OPC items, data change every second, this mean we will have 40 events/second, after 1-2 days working, data update to table on web application become slowly.
    Event config

    #3400
    MikhailMikhail
    Moderator

    I suppose that 40 events per second is too much, and the software needs special performance optimization for your case. Why do you need an event for every change of a channel? You can export data to the external database without generating events.

    #3402
    Avatarcatcute
    Participant

    Hi, I just want to test the performance of software, with big system maybe many importance events(alarms) can raise at the same time. Can you give some ways for performance optimization software in this case? Thanks Mikhail.

    #3409
    MikhailMikhail
    Moderator

    Hi,
    A research is required to find a bottle neck. May be you need to develop your own plugin that access existing events. The web app support custom plugins.

    #3410
    MikhailMikhail
    Moderator

    First of all, it is needed to analyze your system, specify work cases and then decide if the software should be optimized for the system.

    #3415
    Avatarcatcute
    Participant

    Hi Mikhail, Thank you for your reply!

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