From: Allan (aballard_at_ix.netcom.com)
Date: Wed Nov 10 1999 - 23:29:53 EST
>From an old copy of "Windows 95 Secrets:"
...DCC is not able to give you the 14 kilobytes per second of
file transfer speed that the 115,000 (self: from the newer
UARTs) would imply. DCC is much slower on a serial cable
than Laplink for Windows. Once you've used Laplink, DCC is
essentially unusable.
Amen.
Regarding DCC on a parallel port, perhaps better throughput is
available, particularly for enhanced ports."
Use of IR for a DCC would seem to be limited to the maximum
speed of IR. On my antique 760CD, that would be up to
115,000 for Generic mode, or 1.15Mbps using Thinkpad mode.
(Now we are getting somewhere a bit faster.)
Perhaps the newer TP's do better.
My experience was with a cable hooked to two serial ports.
Transmitting through two modems using those two ports
can easily reach 28.8, or 115,000 theoretically with
compression, on older modems. Using DCC on those
same two ports will only make your hair fall out. It won't
move very much data.
On Wed, 10 Nov 1999 17:01:12 -1000, David Ross wrote:
>> Don't know about IR, but DCC is slow as molassas. I used it
>> once, just to see what it is all about, and shudder to remember
>> the crawling pace.
>>
>> I think I'd just add a modem to the other machine, and use a 2nd
>> line to RAS into it.
>
>Direct cabling (either through wire or through IR) is obviously faster than an analogue
modem
>on that port, since one can transmit at the maximum hardware speed of the slower of
the two communications ports, whereas with a
>modem there are in addition to these constraints the further constraint of the maximum
modem speed. Even the IR - in general slower
>than a cabled serial port - is faster than any standard modem (I'm not including ISDN
et al here). I don't want to defend DCC as a
>piece of *software*; indeed, my contribution to the thread was to point out that one can
essentially establish RAS across a direct
>(serial) connection, including IRdA, and avoid the DCC program.
>
>- David R.
>
This archive was generated by hypermail 2.1.3 : Thu Jan 23 2003 - 09:55:33 EST