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One more feedback item on this tick loss and implications there of. It
really should be no surprise what the results of tickloss are. We had three
different computers, two different datafeeds, different software, running
the same system using tick bar charts. We exchanged .gifs of the buy sell
signals and what an eye opener it was. His Ensign - DTN system was far
superior to ProSuite-BMI DM. The TS4 was quite respectable and after
switching to a PCI comport board the tick counts were quite similar as were
the signals to the DTN Ensign system. Kind of points out where a lot of
market noise comes from...when the feed, the computer, the software, the
trading system, the order entry, the individual, are all concerned.
BR
----- Original Message -----
From: "BobR" <bobrabcd@xxxxxxxxxxxxx>
To: <omega-list@xxxxxxxxxx>
Sent: Tuesday, March 14, 2000 10:59 AM
Subject: Re: DTN Satellite / Serial Card Alternatives
> Good idea to check around for feedback on this. Here is some. A friend
and
> I are both running the TurboExpress 920 which has the 64 byte
> buffers(16750uarts). PacificComware has no plans for a 128byte board. He
> is running DTN and Ensign and I am running ProSuite - Global Server - BMI
> data manager and BMI satellite. DTN has a much higher baud rate than the
> BMI sat box. We both get character overruns even though BMI is 38.4K and
> his DTN is magnitudes faster. Someone posted a theoretical requirement
for
> buffer size a few weeks back and I believe the conclusion was that even a
64
> byte buffer would be insufficient. I don't recall if a 128 would be. We
> also made tick counts at the end of the day for the same symbol and time
> period. I also compared the tick count on a TS4 system using the
> motherboard comport and an SIIG CyberSerial Dual 16550uart board(16byte
> buffer). We used the emini because of the large number of ticks in a day.
>
> Conclusion supports the notion that the ProSuite-Global server - BMI DM
> combination is a tick loser. It appears to lose up to 20% or more of the
> emini ticks whether it is on a motherboard comport(16 byte buffer) or an
ISA
> board comport(64 byte buffer). Whereas on the big snp it loses about 2%
> compared to the TS4 system. The DTN Ensign system always came in with a
> thousand more emini ticks than the TS4(comport or SIIG PCI board both of
> which were 16byte buffers).
>
> Just a few days ago I discovered that Black Box has a PCI board with the
128
> byte buffer(16950 uart). Belief here is that no configuration is going to
> help the BMI Data Manager as that is the bottleneck.
>
> BobR
>
>
> ----- Original Message -----
> From: <ALVIS2JS@xxxxxxx>
> To: <omega-list@xxxxxxxxxx>
> Sent: Tuesday, March 14, 2000 10:31 AM
> Subject: DTN Satellite / Serial Card Alternatives
>
>
> > Moving from TS4 / W98 / BMI sat to TS2k,V5 / Windows 2000 / DTN sat.
> >
> > Am considering Pacific CommWare TurboExpress 920. But DTN rep also
> mentioned
> > alternative serial cards from Boca, Siig and particularly Digi
> International.
> > Digi (www.digi.com), which apparently has a 60% market share, claims
> their
> > twin port Acceleport Xr, is a superior product that minimizes use of
> system
> > resources. At $200 to $250 (street price), it is somewhat more
expensive.
> >
> > Does anyone have knowledge of or experience with these alternatives to
the
> > 920, particularly the Digi Xr. Any thoughts appreciated.
> >
> > Regards,
> > Jim Alvis
> >
> >
>
>
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