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Citrix & VFP bandwidth question
Message
 
To
27/03/1998 16:19:46
General information
Forum:
Visual FoxPro
Category:
Other
Miscellaneous
Thread ID:
00087509
Message ID:
00087940
Views:
44
Hi Stephanie,

I believe Tahoe is scheduled to be released in the Fall of 98 in conjunction with the next release of Visual Studio. I have just begun testing different connections with Citrix. So far I've tested 28.8 TCP/IP via Internet and 9600 to 56K RAS connections. To be honest I wasn't happy with the performance of VFP apps at any of these bandwidths. Other software however was acceptable to great at all bandwidths which shows the problem is with VFP. As an example I tested our scheduling software (NetScheduler) which has a main GUI, in VFP terms, of a menu, toolbar, calander, listbox and grid and performance was fine while a VFP app of a menu, grid and 10 command buttons was unbearably slow. Not great news but I hope this helps.

Does anyone else have any info on this screen bitmap issue in regards to Tahoe?

>Hi Colin -
>
>Well, that's bad news! When will Tahoe be released?
>
>Do you have any VFP apps being run over Citrix? If so, at what bandwidth?
>
>Thanks
>
>Steph
>
>>Hi Stephanie,
>>
>>Unfortunately the problem lies with VFP. VFP treats the entire screen as 1 bitmap. If anything on the screen changes, VFP refreshes the entire bitmap and using Citrix the entire bitmap is transferred down the line. Screens with a lot of controls and/or more visually intense controls (grids, pageframes) will take longer to refresh each time. I've mentioned in past threads that I've heard that Tahoe forms will be able to run in a browser as is. I'm hoping that to accomplish this they fixed this issue. With the length of time FoxPro and now VFP has been part of the M$ family of products you think they could design it to adhere to their own Windows standards. HTH
>>
>>>Hi All -
>>>
>>>I've read most of the recent threads on Citrix & VFP. We're running a VFP application that contains pageframes and grids over Citrix. The remote offices (3 remote offices, average of 5 users at each remote office) are accessing the Citrix server at 56K. The performance is too slow. My question is, based on your experience, what is the minimum bandwidth we should have for acceptable performance of a VFP application with pageframes and grids?
>>>
>>>Thanks for your help.
>>>
>>>Steph
Colin Magee
Team Leader, Systems Development
Metroland Media Group Ltd.
Mississauga, Ontario, Canada

cmagee@metroland.com

Never mistake having a career with having a life.
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