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Wide area connection speed?
Message
De
05/02/2016 15:50:57
 
 
Information générale
Forum:
Internet
Catégorie:
Autre
Divers
Thread ID:
01630948
Message ID:
01630960
Vues:
64
>>>Thank you. The IT says that 100 mb is the max connectivity. I wish I had a web approach.
>>
>>You might offscale some heavy transactions into a Web service so to have a mix and match. Maybe that could help.
>
>Naive/newbie question: if the PC has only 100 MB connection, why would Web service work faster than PC-to-network connection?

All reasonably modern LAN networking is gigabit (1,000Mbit/sec).

Site-to-site connections within a city or metro area is sometimes called Metropolitan Area Networking (MAN). S2S over distances greater than that is Wide Area Networking (WAN).

It's been a couple of years since I last looked into it but my understanding is 100Mbit connectivity is pretty good (and expensive!) for either MAN or WAN. It would be nice to think that a typical VFP app would run decently at that speed, but in practice a link like that will have much lower actual speed than a 100Mbit LAN link for a typical user:

- Dedicated site-to-site links tend to be *very* busy. As a result, even with no traffic management in place, your traffic will contend with many others for use of that link. Your real-world throughput will be a fraction of the nominal value

- There may be traffic management in place. You may be on a network segment at your end that's limited to using X% of the total link bandwidth. And you may be contending with other users on your network segment for use of that X%

- Some WAN/MAN links transparently use hardware compression to increase the apparent bandwidth of those busy connections. This might actually help your app, as some DBF type files can be compressed as much as 10x. On the other hand, this will hurt latency due to the time involved to compress and decompress your traffic.

- Whether hardware compression is in use or not, there will be a lot more network latency over a MAN/WAN link than over a LAN. This alone can be perceived as slowness in apps, especially for small queries you would normally expect to be very quick

The quickest fix in your situation would be to use Remote Desktop or similar, rather than pulling your DBF/CDX/FPT data directly over that 100Mbit link.
Regards. Al

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