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I don't know how you could do it without comparing different systems.
Perhaps the cme provides a total tick count for the different sessions on
the emini? That would make a good reference. Other than that, comparing
different systems would seem to be the alternative. Let me ask, when you
open the TurboCom Re:Ports what counts if any appear for Parity, Framing,
and Overrun indications? If you have all zeros, then I would like you to
tell me what your system configuration settings are for Flow Control,
receiver buffersize, baudrate, multiplier, UART assist, etc. An overrun is
an indication of tickloss. Taking the period for the 9:30 to 16:30 of the
emini provides a lot of ticks to compare, i.e. 20,000 to 30,000 in
6hrs45min. You could make a test on your own system by running the DTN feed
into the motherboard comport for a week and take a five day average. Then
change it to the TE920 card and run it for a week and take an average. A
two day test, one on the MB port and another on the TE920 might be
sufficient since the difference should be significant and your TuboCom
Re:Ports can monitor the motherboard comport for overruns. You should know
rather quickly if the TE board is providing much benefit.
Perhaps one of the computer gurus can answer this question about when the
standard motherboard uart is serviced...with each uart clockcycle in a
polling mode?...when there is flowcontrol request?...when there is one byte
or 16 bytes and the uart says it is full and asks for service? The TE920
board can be configured for the cpu to service it when the receive buffer is
filled to different byte levels, i.e., 1, 16, 32, or 56.
BR
----- Original Message -----
From: "Hinton Clabaugh" <clabaugh@xxxxxxxxx>
To: <omega-list@xxxxxxxxxx>
Sent: Thursday, March 16, 2000 12:40 AM
Subject: Re: DTN Satellite / Serial Card Alternatives
> How are you fellows getting the tick counts and figuring the number of
lost
> ticks? Can you do it without comparing different systems? I'm running a
> TE920 card and DTN satellite with ProSuite 2000i on Windows 2000. Thanks.
>
>
>
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