Re: polling
- From: "Geronimo W. Christ Esq" <thegreatsuprendo@xxxxxxxxxxx>
- Date: Sat, 11 Nov 2006 00:39:16 +0000
david.tucker@xxxxxxxxxxxxxxxxxxxxx wrote:
You have UDP all wrong, it is really only useful for talking to a lot
of clients at once. For example if you want to push the same file out
to 20 machines, in theory UDP is 20 times faster than with "normal"
TCP/IP communications. (Theory only because UDP drops packets like a
dog).
This is very misleading. UDP doesn't inherently drop packets, that depends on the underlying transport. On a good network with sufficiently powerful machines there will be zero packet loss. On a lossy network, even TCP/IP performance will suffer due to the retransmits. You can't get something for nothing.
The correct way to put it is that UDP provides no delivery guarantees.
If that does not work, by a better router/switch. Some of the cheaper
ones have a hard time with UDP in general.
Weird suggestion, there. A switch certainly does not care about anything above the ethernet layer so why would it care about UDP ? Even routers are mostly concerned with the IP layer only.
.
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