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The Alpha Software Forum Participation Guidelines

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Bonus TIPS for Successful Posting

Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.

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The more detail you provide about your problem or question, the more likely someone is to understand your request and be able to help. A sample database with a minimum of records (and its support files, zipped together) will make it much easier to diagnose issues with your application. Screen shots of error messages are especially helpful.

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Performance

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  • Performance

    Hello
    Database Software Solutions Limited
    www.dbasesolution.co.uk
    http://www.precise360.co.uk
    PRECISE360 -
    LYNCHPIN -

  • #2
    Re: Performance

    Hello

    We have an application with a simple set for managing quotes.

    A button named Line on activates takes the user down to the child table to input data regarding to the product being quoted.

    On a 4 user network (a dedicated machine with 4 gig of Ram and XP is being used as the server) the speed at which the button displays the form varies considerably.

    On a windows 7 machine it is instant, but on the other 3 machines which are XP SP3 there is a delay of 3-4 seconds.

    All workstations have 3 gig of ram and the network is gigabit.

    Why the delay on the XP machines?

    Any ideas would be appreciated.

    Kind regards

    Alex
    Database Software Solutions Limited
    www.dbasesolution.co.uk
    http://www.precise360.co.uk
    PRECISE360 -
    LYNCHPIN -

    Comment


    • #3
      Re: Performance

      If all workstations have a gigabit network card, and are configured for full duplex, and all intermediate switches (used to be called hubs) are gigabit, and you have gigabit cables in all locations - should work ok.

      However, I had a client run cat 6 home runs for ALL workstations back to the main switch, (they are running Server 2008 R2 Standard,) and different workstations are faster than others.

      I have never found documentation to support my suspicion, but I suspect that where you have mixed workstations, (XP and W7,) there could be performance issues.

      Also, if you are on a "shared" network, then you will never get the performance that a dedicated server will offer. If you do decide to get a dedicated server, be sure to get 2008 R2 Standard - not anything higher. Otherwise you cannot disable opportunistic record locking.
      Cole Custom Programming - Terrell, Texas
      972 524 8714
      martin_w_cole@msn.com

      ____________________
      "A young man who is not liberal has no heart, but an old man who is not conservative has no mind." GB Shaw

      Comment


      • #4
        Re: Performance

        Are the XP workstations configured to do live (real time) anti-virus and malware checking?

        Comment


        • #5
          Re: Performance

          The PCs are configured that the shadow folder is not scanned and there are no scheduled virus scans on each workstation.

          IIRC the Alpha data folder on the server or at least dbf and cdx files are not scanned.

          Comment


          • #6
            Re: Performance

            You might try disabling the real time anti-virus package entirely (client work stations and server), and then comparing performance.

            Comment


            • #7
              Re: Performance

              There is something going on with SMB on windows 7 / server 2008 machines with dbf's (smb 2.0 to be precise)
              I have a client that runs an app since 1994 and had to do the reg file at the machine HOSTING the dbf's

              here is some more reading on others having issues...

              maybe I need to do this to my machine as alpha hasn't been my friend..

              http://www.dataaccess.com/whitepaper...adcaching.html
              http://fox.wikis.com/wc.dll?Wiki~OpLocks

              http://social.technet.microsoft.com/...-8f51872610b0/

              Comment

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