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Slow Network

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    Slow Network

    First of all, Happy New Year!
    We are currently operating a network from our mainoffice to a satelite office 80 miles away. We are upgrading from 4.0 to 4.5 in the near future, but for now, we are noticing a real slow response, in the satelite office, when entering into change mode, > 1 minute to begin changes. I think this may be the problem and want to see if anyone concurs with it. Out technical services staff say that we are running 10mb routers, all of the workstations are optimized. The main database has about 8 dataases that it shares data with. Now I think that we opening then log database which says look to the file server 80 miles away, which says okay now open the linking database back in the satelite office which says the actual database is at the main office, etc..... It would appear that the number of linked databases and the number of lookup databases may seriously affect the time needed to open each record. I am told that it would help if we had the 100mb routers to transfer data which would dramatically improve speed thus improve the communication of the main dtabase and the linked databases. Does this sound like the problem? I am very happy to say that my employer has decided to use my software which was over 3 years in developement and now has the support of the higher administrative staff including the tech support division. So I wanted this software to work as flawlessly as possible and it seems to be working out, just it would be nice to provide a more efficient program at the satelite office.

    Thanks again for all of the help in the past.

    Warren

    #2
    RE: Slow Network

    What you haven't said is how the office that is 80 miles away is connected.

    That's probably the slow link.

    Even a T1 line is about 1.5 mb, so the 10mb or 100 mb local network won't change the performance to the remote site that much. (Although I would change the LAN (Local Area Network) to 100mb as soon as possible - there is no cost advantage to a 10mb LAN anymore.)

    You are probably limited first by the speed of the WAN (Wide Area Network) connection and secondly by the design of the application and the amount of data that must transfer between the sites.

    You should also be aware that some types of communication lines work at different speeds in each direction.

    I have a cable connection that recieves from the internet at 1.4mb, but transmits at 128kb. (Of course, there is no quarantee that those speeds will be reached - they are the maximum possible.)


    I can tell you that most of this problem is not Alpha based. This affects all remote based systems, whether it is small or large. I just finished up with an Oracle App customer that has the same type of speed issues between local and remote sites. There the application is optimized for the amount of data that flows between the sites and the differences aren't as great as yours.

    Performance improvement is always a matter of finding the weakest link and fixing it.
    Al Buchholz
    Bookwood Systems, LTD
    Weekly QReportBuilder Webinars Thursday 1 pm CST

    Occam's Razor - KISS
    Normalize till it hurts - De-normalize till it works.
    Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
    When we triage a problem it is much easier to read sample systems than to read a mind.
    "Make it as simple as possible, but not simpler."
    Albert Einstein

    http://www.iadn.com/images/media/iadn_member.png

    Comment


      #3
      RE: Slow Network

      A few other things to check:

      1) In the General Settings under network is the refresh rate 0 and the index locking unchecked?
      2) Just as a test, turn off any virus checking and see if that has a dramatic effect
      3) If you open the default form for that table or set and try to go into change mode is it still as slow??
      4)Also, if it is a set, if you open the default form for any of the set's tables and try to change is it still as slow??
      5) If you try to change a record and get the long delay, is is just as long a delay when you save that record and try to change a different record?

      You'd probably be better off running the remote user on something like Terminal Services, PC Anywhere or Gotomypc where a local machine does all the work and there is minimal data transfer between sites. Until Alpha offers a client-server engine, this is probably your best alternative.

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